[Device Reviews and Information] thanksmeg:
Hi everyone, I got mine yesterday. Quick infos:

- Headphone jack : it's the first thing I checked. My headphones fit and work well, but if I rotate them they will pop out as rob described. It is still largely usable.

- Screen : My screen came with a couple of dead pixels. If you tilt the phone you see them as bright white. If you face the phone you see them as a greyish shape. Unpleasant but I don't want to go through the hassle of sending it back.

- Screen : Also on the top left corner of my screen there's a black shape (pixels not turning on?). It's not very noticeable but it's there.

- Wood back: Kinda feels like real wood, not plastic. Very impressed.

- Camera : I was expecting worse. The pictures are not that bad frankly. I compared with a coworker's iPhone 6+ and yes his pictures are better (less grain, less blur, better colors) but honestly when not zoomed in at max the overall picture looked pretty similar. For a casual user like me it's fine. Not the best camera ever, but certainly not the worst.

- Speaker : It does the job, the sound is frankly not good but the volume is there. For occasional use only. Use blutooth speakers if you need better.

- Black Borders : I was expecting something big and ugly, they are actually not that noticeable.

Now on to the software:

- Root/TWRP/Xposed : For some reason Flashtool would stay stuck during the 'download' action of flashing TWRP. Trying this made my stock recovery to not work anymore, although maybe it was broken from the start. If I was to boot into recovery, I would get an image of an android laying on its back with a red Warning and a Chinese symbol below. Anyway long story short I did like the user 'sheapchit' and used KingRoot to get root and Rashr to flash TWRP. Both worked well. From TWRP I flashed Xposed v80 sdk22 arm (not arm64 and not sdk21) and supersu (latest beta version). I then removed Kingroot, deleted their "Purify" app, reflashed supersu.

- Next up, I installed Xposed installer and a couple of modules : GravityBox [LP], Xposed Additions, YouTube AdAway, YouTube Background Playback. All work very well.

- I modified build.prop with ES File Explorer to enable NavBar. requires root but the modification itself is very simple. add that 1 line of text at the end of build.prop and reboot: qemu.hw.mainkeys=0

With the "Xposed Additions" module I remapped the camera button to launch Google Camera when screen is on and take a picture when Google Camera is on(*). When the screen is off, it pauses/plays my music on a single clic and switches on/off Torch with a long press. I also modified the behavior of the menu/back hardware buttons to toggle mute/orientation. I paid for the pro version of "Xposed Additions", well worth supporting the dev. I encourage everyone to give it a try.

So yes, with a little tinkering you can make the camera button do whatever you want. I like this phone so far, just wished I had been a bit more lucky with the dead pixels. :(

(*) EDIT : Taking the picture using the hardware button when in Google Camera doesn't seem to work. Any help welcome.

(*) EDIT2 : Set Google Camera as the default camera app (from the gallery) and it works!