Interesting. I'll have to watch the video. I think it'd be hilarious if it was all fake. I've read lots of "first hand" stories of people getting sick after playing it and have even seen a couple cabs in the background of some of Todd Tuckey's videos, namely the one where the Cinemassacre guys went through his shop.
Would be kind of cool to do a Polybius MAME cabinet, though.