My comments only apply to me, my preferences, and the bow I shoot:
The grip has to be nearly a perfect fit, as it is my connection to the bow. My bow has to be relatively powerful and quick on the shot. I prefer a leather or skin grip for its tactile feel. If possible, I want it to look absolutely like a one-piece weapon. I want really great wood, but not something that looks too over-baked. The intangible part is that my bow has to shoot naturally and accurately with no struggle. If the bowyer is a friend and PBS member, the ingredients are all there.
I shoot a Cari-bow Tuktu Ex takedown and it fulfills every one of those desirable traits.