My opinion: I tried it...I love it...
It does take it's toll on fletching, but the benifits outweight this. It was the easiest sight I've used to tune with.
Only rest I would use other than the bisket is a drop away style.
The best thing about the bisket is the price. If you buy one and don't care for it, then your not out a lot of money for your time.
Give one a try.