My grandma puts slipcovers on everything, and still has the plastic wrap on her lampshades, etc., etc. I think it looks cheesy. Perhaps there’s a middle-of-the road option: have your furniture reupholstered (or just the arms with a similar material). Then keep kitty’s claws trimmed (just be careful not to cut too close to the bone or you can hurt kitty), or get something like SoftPaws.