They should be fine. They're not big motors swinging weights around constantly... and as far as the resistance.. I'm not worried at all, there's not going to be so much of a range that it's going to wear out. I guess we'll have to wait and see, but I'm sure they will be fine.
Battery life with all these lights, features, and mics and everything else is my biggest concern at this point. I have a feeling anything around or slightly better than a DS4 battery life will be good enough for Sony I hope I'm wrong.