2 issues on LS980:
3G Data, voice calls, and SMS do not work. (LTE works though, oddly enough)
Immersive mode is broken.
Smooth as butter though and no reboots. Flashing back to SlimKat at the moment(kinda need the phone part haha), but this will definitely be my daily when calling works.
EDIT: The LS980 maintainer knows about it and will commit the CM patch soon.