Cliff, thanks for posting the video. watching those videos, i can see the engagement distance and control of center line would make most aikido folks uncomfortable. not to mention the change level and the intensity. i also like this one https://www.youtube.com/watch?v=KZfdJQBzmcE
the older man is quick and intense; weapon lead the body.
one comment, starting at a distance then closing for engagement is very different from regular aikido weapon line up.