Recently there was a death in NYC, I think her name was Liz Padilla, it was reported that she could not unclip fast enough to get out of harm's way after she fell. Although I wonder how they knew that.

And that has certainly made me more aware of that danger, I usually unclip in situations which I judge to be more hazardous than usual, except I have egg beaters, the clip in so easily that it is more difficult to stay deliberately unclipped than to clip in, so I have to concentrate on staying unclipped, not good of course.