I don't trim Evilcat's claws because I like my skin, but I do keep the Hellions from getting too pointy. Tabby Hellion likes having his claws clipped. Tortie Hellion hates it, fortunately she is very slow. I keep the claw clippers in between the couch cushions so I can catch her by surprise when she climbs in my lap.
Then I can start clipping while she tries to process the situation.
I can usually get 3 or 4 feet done before she finally figures out what is happening and what she should do about it.