Who uses a knife like that? Leaning forward, keeping the blade dead while out in front, spare hand lifeless..... I know that the purpose is for an instructional video, but geez, this guy should be attacking in a cleaner manner than that (I would hope). That kind of stuff looks good for the Zombie TV series, but outside of that.......
Marc, information on the participants is attached to the YouTube video. You can contact the uke with your concerns.