I finally got it working!
I used the HTC Vision build.prop edit including the fingerprint, and googled for the apk, found it in an xda atrix forum, downloaded, installed, and I'm watching Joe's Apartment as I type this.
ro.product.model=HTC Vision
ro.product.brand=tmobile
ro.product.name=vision
ro.product.device=vision
ro.product.board=vision
ro.product.manufacturer=HTC
ro.build.fingerprint=tmobile/htc_vision/vision/vision:2.2/FRF91/277427:user/release-keys
Now I'm going to test which build.prop edits I can change back and retain functionality, I like Swype. Then I'll see if I can mod the apk to work with no build.prop edits, and without having to comment out anything. I would prefer as clean an install as possible, but I'm just glad to get it working.
For those concerned, I don't plan on using it over 3G, my 3G coverage is never good enough for that, but wifi is everywhere nowdays, and watching a movie or an episode of a tv show I like while waiting in some office will be cool.
Edit: Confirmed, only need the model and manufacturer to be changed to a supported phone. Good news on battery issues, it doesn't continue running in the background, no running services left behind.