I caved and flashed. My impressions are very good. Basically CM12, with current bugs, no stock mms right now, AOSP keyboard's gesture typing doesn't work, and the DPI changer doesn't work for me, just FC's settings when applying. If you really are implementing Viper, my hat goes off to you. GPS is solid, data is strangely better than the other cm12 build. Runs buttery smooth with Toxic, great battery life too. Does NFC work on this one?
EDIT: I also noticed that I'll always have a "Charging" status on lock screen when I'm not charging it, but I assume this is a current cm bug.