I just flashed it and got it up and running. In short I can't answer that yet. Feels pretty simple and light so far.
I heard somewhere you need to update Your firmware RUU for the 4.4.3 update
Well I didn't, but thanks to your post I found out that S-OFF was possible for my device (although it costs 25 dollar) and I upgraded my firmware succesfully. I did a full wipe and flashed Virtuous 2.0.0, but no luck.
Both WiFi and camera are not working...
M8_UL PVT SHIP S-OFF