I did buy it. So far, all apps * (root or not) and six out of eight Xposed modules I have tried have worked. This is a somewhat small sample, because I haven't tested any apps I don't use myself. These are just the apps I personally use:
* = Update: Pokémon Go does not work on x86 at the moment.
Some working root apps
- Adaway
- BusyBox installer by Meefik
- f.lux
- Linux Deploy
- OS Monitor
- Root Browser
- Root Checker
Some working Xposed Modules
- Gesture Navigation
- Network Speed Indicator
- NoSafeVolumeWarning
- YouTube AdAway
- YouTube Background Playback
- YoutubeSwipeToSeek
Some NON-working Xposed Modules
(I don't know if this has anything to do with x86, may also be Lollipop incompatibility? No idea.)- Notification Mod
- Rootcloak
The guys at XDA have done much more extensive testing in this thread.