This is a something like CM10.1 build, with some cherry picks and modifications. It's not built Nightly: I build manually and mostly every two days. Depending on how many changes got merged to official CM10.1 Nightlies.
You normally can flash them just over a official nightly without wiping anything. It's just the same procedure like flashing a new nightly.
- Also thanks to Finnq for the BatteryBar, NavBar height and the Center Clock Mod!