Looks to me like they promote heel strike on their runs.
ya.
i figured out what it looks like.. if you watch that vid, it basically looks like this guy is about to shit himself. as he gets closer to his destination in the city, looks like he's ready to explode.
the shoes are probably definitely promoting that weirdness I see. maybe excessive heel striking makes it look like you're going to crap yourself? i'll have to go check youtube.
lol