Guys,
I might not know what I am talking about, but I think if you do any grinding/cutting/polishing on G-10 you should wear a mask because you don't want the little fibers accumulating in your lungs. I know carbon fiber is VERY hazarduous this way, so who wants to risk it?
I guess Bandit or some of the other pros here will know better than I, but now is not the time for Suspects to be getting sick.
Having said that, I think I am going to dig out a mask and my Dremel and see what happens!