yeah I've definitely clipped curbs hauling ass down sidewalks and have paid for it.
in the last few months took a really nasty slam landing a basic manual off a curb, skinned my hands, knees and hip, landed wrong when I came off the curb and wobbled out. never happened me before in my 17+ years of skating.
I've also slammed pushing, but that's stage 10 Indys for you, couple times the front truck would buckle somehow and just pitch you into the ground. fuck those trucks for that little "feature".