It's been a while since I did anything like that to my equipment. It's nice to see that modern stuff is decently rugged.
My last disaster occurred c1980. I was on the roof shooting some neighborhood shots, and had just finished when my Lake Placid F-1 (I've been a Canon user a long time...) slipped off my shoulder. In the old days (ie: the days after leather and before neoprene straps), we used guitar straps, which are rather slippery on the underside (very pretty on the top side...after this incident I added a velcro strip to the strap and to my jacket). The camera took one bounce and then fell about 10 feet to the ground.
The entire top side of the camera on the film advance lever side was stove in as far as the lever pivot, and the frame counter was smashed. But the back did not pop open, and there was no light leak. The photos were fine.
I used the camera like that for at least a month before sending it back to Canon for repair, which came to around $100 at the time (the body new was $500). I gladly paid it, and still have the camera, which works perfectly to this day (when you can get proper mercury batteries for the light meter even that works perfectly).
So I have high expectation of my 5D3 (although it is in a lot less danger these days since I am not willing or even able to get myself into as dangerous positions as when I was younger, so the camera is safer than it might have been).
I am appreciative of weather sealing...