I ran it for several years. It's a great addition to the system. I didn't like it on snow or mud, but for tarmac use, it's awesome.
FWIW, I also gambled on an OBX helical front diff and it feels exactly the same....... My Quaife has moved on to a new owner and I still flog the ever loving crap out of this OBX. It just won't break.