My Forrest surprised me the other day. I was giving myself a pedicure using what looks like a human version of the Pet Zoom Nail Groom. I had my foot up on a kitchen chair grinding away and Forrest was sitting on the chair watching.
Forrest was very relaxed and seemed interested so I thought I try it on him. I put him on my lap and started grinding away at his claws. He didn't seem to mind at all. He got a little wiggly on his second paw - but less so than when I'm using the clippers. I never would have guessed he would sit still for it.
I'll use it on him again. It did make his claws nicely rounded and smooth.