Mimitabby:
Probably covers the same market that would buy the
"Brooklyn Machine Works Shin Burgers"
http://www.mtbr.com/reviews/Pedal/product_22385.shtml

I can only imagine the damage slipping the pedal and getting shin-slapped would do. ...probably has that name for a good reason

I'm thinking people who do trials and some pretty technical mtb/downhill, who can't afford slips, but can't afford to clip, and are likely wearing protection anyway.