Two things:
1. You should use the MPSettingsHelper to define a unique key for the user defaults. Name it something more concrete. What if we want to store more sortings later? Suggestion: entryTableSortDescriptors
2. You should bind to [NSUserDefautlsController sharedUserDefaultsController]. To access the values, use the key path "values.<SettingsKey>" in our case "values.entryTableSortDescriptors"

If you change that, I'm going to merge it. Sorry for the nagging ;)