of all of the cats that i have ever had, none of them have been declawed, but it wasn't a conscious effort to make sure that they cat kept it's claws. it was just that we didn't ever get them declawed (if that makes sense).
i can tell you that throughout all of the cats i have had in my life (countless, i seriously could not count on both hands the number of cats), my couches were always beat up and tattered on the sides, they loved to scratch them up, even when they had tons of scratching posts and other things that they were allowed to scratch on.. they just for some reason preferred the couch instead.
also, i had one cat who wasn't as tame as most house cats are. she scratched up a hell of a lot of my friends and company, it was embarrassing and i always felt so bad about it.
good luck making your decision!