I asked the seller if it could be easily removed, here is his reply:
Yes it can. When it was installed they had to counter sink it into the grip and epoxy it into place, but the epoxy can be removed and the clip taken off. This would probably leave a small open area in the very back of the grip. Which could be filled with epoxy very easily and should not be noticeable. I would use JB Weld Quick 15 minute epoxy since you can custom blend the color. One tube is black and one white. You can also pick up a set of Hogue Extreme grips for $69. That is what I would do.