I have done both ...
We clipped our old cats nails and she never scratched any of us. As she aged, she scratched furniture and things less so I didn't clip her nails for years before she died.
The cat we have now had his front paws declawed before we got him. He still hunts, has been in the odd tussle with the neighbour's cats ... and he does just fine. He's a pretty big cat and doesn't like grooming. I'm not sure I'd be able to clip his claws. I'm glad I don't have to.

