When I first heard about it I thought this was pretty crazy and dangerous. The biggest danger that I would see is getting blindsided by hits when more than one attacker engages. This doesn't look to bad though and the refs are really on top of things. <iframe width="560" height="315" src="//www.youtube.com/embed/GixDXD44_yA" frameborder="0" allowfullscreen></iframe>
This seems to be made for people who have a fetish for watching people on the ground in the fetal position get the crap beat out of them. After the first person on one side goes down it's pretty stupid.