I've made grips out of both ebony and zircote (my S&W 60 currently on it made from the latter, pics were posted here some time back, but I forget which thread), both of these woods work well for grips as long as you adhere to rules concerning grain direction, if you have the grain going across the body of the grip rather than lengthwise, you may run into problems with severe recoil or dropping the gun on the pavement (not a good idea in any case). Still, pistol grips don't take the same kinds of stress that riflestocks do in most instances so I doubt you'll have any problems with ebony grips, I never have had any. One nice thing about wood grips in general is left uncheckered they don't grip clothing on a draw and they can be made thinner than most of the available rubber grips I've seen, they also look better, but I guess that's a matter of opinion.