during the IT show, my friend dropped his 60D with 24-70 and flash on when it happened. the bottom part of the flash was snapped and the hoya filter on the lens was unable to take out. luckily, no other major damage visibly.
suspected the fastener self unscrew when squeeze through the large crowds.
anyone wiith similar black rapid, screw on fastener type of strap, please check the fastener once in a while. even though it's common sense but many of us may neglect it when busy shooting.