I also have one. This is a great wah. Yes, it takes a while to dial-in. but the effort pays off. I should say that I am using a Xerograph Deluxe with and expression pedal. I does not work as well as a true wah pedal. On the other hand it works very well and is more convenient since I only have to mount the pedal on the board.
Basses: Fender Am Std P5 (x2)
Amp: Verellen Meatsmoke Preamp, Crest Pro-lite 2.0
Cabs: Fearless F115, F112