I don't think the previous posters used them properly. They are great, they should stay on for about 6 weeks if they're done correctly. You must get the correct size and of course your kitty will fuss just like he does when you clip his nails.
If they are the proper size, and applied correctly, they will not interfere with your cat's ability to retract his claws. Their traction is more about their paw pads than their claws, so yeah, their traction is still fine.
All these things do is cover the cat's razor sharp claws with blunted tips so he can't scratch you, your kids, or your furniture. Everything else is still the same. He can climb and do everything else a cat normally does.
To avoid problems, maybe have your vet tech apply them the first time, to show you how to do it correctly. Good luck!
proudly owned by two cats!