That said, I'm not a fan of the passive-aggressive demeanor, but then again perhaps it wouldn't be as interesting without it.
I am puzzled by comments like this (and others in this thread about "nonchalance", etc.). How is his demeanor as evidenced in the video passive-aggressive? FWIW I don't know the man, but what I see is a very focused, intense, and apparently not easily flustered person completely in the moment. Frankly I find it refreshing to see someone work "professionally" in a sense without all the stereotypical grimacing, etc.
Anyway, apart from all of that, I rather enjoyed watching him "do his thing". And while the attacks, etc. were clearly for demonstration purposes (meaning not just some wild attack), it seems as though he's quite able and willing to improvise even in front of a large crowd. And I saw a thing or twelve I'd love to steal...