[exhilaration]

I Googled the first name you posted and he also appears to be wearing minimalistic shoes, looks like Nike Frees?

http://www.all-athletics.com/files/imagecache/photos_big/pho...

[nostromo95]

Those are running spikes. Runners use them in track/XC for races/intense workouts. No one wears them for all or even close to the majority of their running. They're also very stiff in the exact same way that feet aren't.