I used it as daily driver for some days now. It feels so good. I really like Android 5. Camera doesn't work. battery life is about half as long as stock ROM (I got 2 days with stock sony ROM and only one day with this ROM). But I look forward to this great ROM.
Well I'm still on nightly 2015-01-19, and camera works. If they broke camera and didn't fix it, I'm not switching over. If you want a daily, stick to 01-19 for now. Also worth noting: themes break the System UI. Change theme -> "System UI has stopped" message in a loop, so don't do it. Ye have been warned!