I just double posted?...
Ankerson man, if there is one thing to be learned from this vid it's turn on the camera before you maim yourself.

I think they wanted to put more emphasis on the overstrikes in these last vids than the spine whacks. It's produces a much more realistic damage effect on the mechanism. Especially on say, a Rajah II where a big chopping motion overstrike might cause a blade to fail.
Hissatsu5 has plenty of good videos. +1 for posting one where he didn't baul like a girl when his addmittedly inadviseable test went awry to the finger bone.