I believe that it does indeed "hang together" as its own style -- it has a distinct flavor. When I say "this technique comes from here" and "this is taken from here" I'm not saying the Bujingodai folks explicitly and knowingly did so -- just that the techniques are similar or identical, and therefore you can see the influences.
I've not yet had the pleasure of reviewing any Genbukan or Bujinkan video material, so I don't know how my impressions of this independent organization would compare to those groups. Perhaps they share a "Ninja flavor" to different degrees, or perhaps they are as different from each other in their overall "feel" as they are from other arts. There are threads of similarity between both, though (such as the stances I mentioned).
I owe Sensei Dave Gibb an apology, though. When I reviewed the tape for him, I publicized the review like I always do. We both agreed that the review itself was fair -- but I stupidly, after Dave asked me not to and I forgot that we discussed it (I remembered only that we talked about an interview that appears on my site), posted a link to his website at e-budo.com.
They can be a tough crowd over there, and Dave had no desire to be subjected to ridicule. Unfortunatley, I did just that to him, and I feel terrible about it. It was purely my mistake; I plain *forgot* that his original request was not to post the website URL there.
What I had hoped to do was spur constructive discussion about modern Ninjutsu in general (which did indeed also take place). I enjoyed viewing the tape and was happy to add it to the things I've evaluated.