[Samsung Epic 4G Touch] AdhvanIt:
No, it's been broken in all MIUI builds since November. Runs through setup just fine, and FC's at the contact list display.

I/ActivityManager( 2071): Displayed com.google.android.apps.googlevoice/.SplashActivity: +288ms
D/dalvikvm( 2418): GC_EXPLICIT freed 885K, 28% free 10555K/14467K, paused 2ms+10ms, total 73ms
I/ActivityManager( 2071): Start proc com.google.android.gsf.login for service com.google.android.gsf.login/com.google.android.gsf.loginservice.GoogleLoginService: pid=4755 uid=10020 gids={3003, 1015, 1028, 1007, 2001, 3006}
D/dalvikvm( 1816): GC_EXPLICIT freed 38K, 37% free 9245K/14467K, paused 1ms+2ms, total 23ms
D/dalvikvm( 1816): GC_EXPLICIT freed <1K, 37% free 9245K/14467K, paused 1ms+2ms, total 22ms
D/dalvikvm( 1816): GC_EXPLICIT freed <1K, 37% free 9245K/14467K, paused 1ms+2ms, total 30ms
E/Trace ( 4755): error opening trace file: No such file or directory (2)
D/StatusBar.NetworkController( 2176): updateTelephonySignalStrength: mSignalStrength == 99(GSM) 4(CDMA)
I/ActivityManager( 2071): No longer want com.miui.backup (pid 4378): hidden #16
I/ActivityManager( 2071): START {cmp=com.google.android.apps.googlevoice/.activity.conversationlist.ConversationListActivity (has extras) u=0} from pid 4737
D/dalvikvm( 2311): GC_EXPLICIT freed 835K, 12% free 20372K/23047K, paused 6ms+16ms, total 155ms
V/PhoneStatusBar( 2176): setLightsOn(true)
I/ActivityManager( 2071): Displayed com.google.android.apps.googlevoice/.activity.conversationlist.ConversationListActivity: +540ms
I/dalvikvm( 4094): Total arena pages for JIT: 11
I/dalvikvm( 4094): Total arena pages for JIT: 12
I/dalvikvm( 4094): Total arena pages for JIT: 13
I/dalvikvm( 4094): Total arena pages for JIT: 14
I/dalvikvm( 4094): Total arena pages for JIT: 15
I/dalvikvm( 4094): Total arena pages for JIT: 16
I/dalvikvm( 4094): Total arena pages for JIT: 17
I/dalvikvm( 4094): Total arena pages for JIT: 18
D/GoogleVoice( 4737): VoiceModel.updateVoicemailPrimaryCache()
D/GoogleVoice( 4737): VoiceModel.updateVoicemailPrimaryCache(): pending
D/AndroidRuntime( 4737): Shutting down VM
W/dalvikvm( 4737): threadid=1: thread exiting with uncaught exception (group=0x41e53500)
I/ActivityManager( 2071): START {act=com.android.contacts.action.QUICK_CONTACT flg=0x80000 bnds=[0,113][78,203] (has extras) u=0} from pid 4737
E/AndroidRuntime( 4737): FATAL EXCEPTION: main
E/AndroidRuntime( 4737): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.android.contacts.action.QUICK_CONTACT flg=0x80000 bnds=[0,113][78,203] (has extras) }
E/AndroidRuntime( 4737):	at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1545)
E/AndroidRuntime( 4737):	at android.app.Instrumentation.execStartActivity(Instrumentation.java:1416)
E/AndroidRuntime( 4737):	at android.app.Activity.startActivityForResult(Activity.java:3367)
E/AndroidRuntime( 4737):	at android.app.Activity.startActivityForResult(Activity.java:3328)
E/AndroidRuntime( 4737):	at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:629)
E/AndroidRuntime( 4737):	at android.app.Activity.startActivity(Activity.java:3538)
E/AndroidRuntime( 4737):	at android.app.Activity.startActivity(Activity.java:3506)
E/AndroidRuntime( 4737):	at android.provider.ContactsContract$QuickContact.showQuickContact(ContactsContract.java:7747)
E/AndroidRuntime( 4737):	at android.provider.ContactsContract$QuickContact.showQuickContact(ContactsContract.java:7698)
E/AndroidRuntime( 4737):	at android.widget.QuickContactBadge$Injector.showQuickContactForStranger(QuickContactBadge.java:55)
E/AndroidRuntime( 4737):	at android.widget.QuickContactBadge$QueryHandler.onQueryComplete(QuickContactBadge.java:321)
E/AndroidRuntime( 4737):	at android.content.AsyncQueryHandler.handleMessage(AsyncQueryHandler.java:344)
E/AndroidRuntime( 4737):	at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 4737):	at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 4737):	at android.app.ActivityThread.main(ActivityThread.java:4765)
E/AndroidRuntime( 4737):	at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 4737):	at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 4737):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
E/AndroidRuntime( 4737):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime( 4737):	at dalvik.system.NativeStart.main(Native Method)
W/ActivityManager( 2071): Force finishing activity com.google.android.apps.googlevoice/.activity.conversationlist.ConversationListActivity
V/PhoneStatusBar( 2176): setLightsOn(true)
W/ActivityManager( 2071): Activity pause timeout for ActivityRecord{42766d30 com.google.android.apps.googlevoice/.activity.conversationlist.ConversationListActivity}
D/StatusBar.NetworkController( 2176): updateTelephonySignalStrength: mSignalStrength == 99(GSM) 8(CDMA)
I/RenderThread( 2311): RenderThread resumed
I/RenderThread( 2311): RenderThread paused, waiting for signal
D/dalvikvm( 4737): GC_CONCURRENT freed 3832K, 28% free 10421K/14467K, paused 2ms+4ms, total 56ms
W/CursorWrapperInner( 4737): Cursor finalized without prior close()
W/CursorWrapperInner( 4737): Cursor finalized without prior close()
W/CursorWrapperInner( 4737): Cursor finalized without prior close()
I/Process ( 4737): Sending signal. PID: 4737 SIG: 9
I/WindowState( 2071): WIN DEATH: Window{42cfc610 com.google.android.apps.googlevoice/com.google.android.apps.googlevoice.activity.conversationlist.ConversationListActivity paused=false}
I/ActivityManager( 2071): Process com.google.android.apps.googlevoice (pid 4737) has died.
W/ActivityManager( 2071): Force removing ActivityRecord{42766650 com.google.android.apps.googlevoice/.SplashActivity}: app died, no saved state
W/InputDispatcher( 2071): channel '42c9e528 com.google.android.apps.googlevoice/com.google.android.apps.googlevoice.SplashActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
E/InputDispatcher( 2071): channel '42c9e528 com.google.android.apps.googlevoice/com.google.android.apps.googlevoice.SplashActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
W/InputDispatcher( 2071): Attempted to unregister already unregistered input channel '42c9e528 com.google.android.apps.googlevoice/com.google.android.apps.googlevoice.SplashActivity (server)'
I/WindowState( 2071): WIN DEATH: Window{42c9e528 com.google.android.apps.googlevoice/com.google.android.apps.googlevoice.SplashActivity paused=false}
I/WindowManager( 2071): WINDOW DIED Window{42c9e528 com.google.android.apps.googlevoice/com.google.android.apps.googlevoice.SplashActivity paused=false}

It's not expecting the following activity to appear in the contacts manifest:

I/ActivityManager( 2071): START {act=com.android.contacts.action.QUICK_CONTACT flg=0x80000 bnds=[0,113][78,203] (has extras) u=0} from pid 4737

When I remove that from the manifest though, the app won't even appear. Whether I re-sign it with my own keys or leave it unsigned (can't use the original keys when modifying the manifest), it shows an incorrect/missing signature...