It sounds crazy, but...

I just watched the video 'The Art of Mastro Livi', where he makes a razor in a few hours somewhere in Italy.

At the end they show him, Lynn and several others getting shaves, and one of the barbers doing the shaving is shown stropping a razor on his hand.
I did a double take, and rewound a little, and sure enough, he's using his hand as a strop.

Besides the obvious risk to the integrity and cohesiveness of your hand, could this be a good thing? or a useful one?

Thoughts and comments?