I got a warning saying this was designed for Android 4.0 (I was running 4.2.1) but I proceeded anyway. The tweak completely removed the soft keys. Having a Nexus you'll understand this makes navigating the phone rather challenging. I had to find a Factory ROM (As Google had taken the default ones down).
So all this at 5AM, finishing at 7AM left me back at square one. I am brand new to Android though so hopefully learning this the hard way will be for the best.