I don't know this for a fact, but I would have to believe there would be less finger pinch with a two fingered grip than with a three fingered grip, just because there's one less finger on the string. The question is, given your bow's weight and your own capabilities, it that going to over stress your two fingers? I've read several posts on here about people changing to a two fingered grip, and none on people changing back, so some people evidently have tried it and like it.