Just watched all the parts to Mutiny and I gotta say, Shea Flynn sounds like a tank crashing when he slams but gets up to do it again. Same with Dom Leporte and Clayton Vila from what I've seen.
Its pretty important to be tough if you want to take street skiing seriously which is why I brought it up. Some people just can't hang when it comes down to getting the shot after a few hard slams.
Also "tough" is pretty hard to define when it comes to skiing so its not about who can take the most pain, but who can slam hard or get beat up and still get the shot.