A few weeks after I got my 7D, I was in Hong Kong Airport waiting for a plane, repacking my bag to find something. Put my camera on the chair, then went to pick it up, the strap got caught around the chair arm and sling-shotted back straight down to the floor. If i'd seen this video test first I probably wouldn't have shrieked like a little girl (although i was more worried about the IS in my 15-85, it made that 'twoinging' sound as it hit the ground). Still, both work fine.
(actually, it's probably a good thing i didn't see this video earlier, I might not have treated it as well as I have...)