I saw a demo of a Mits projector with the nVidia glasses at an Ultimate Electronics a couple of weeks ago. There was a significant amount of crosstalk - ghosting. I don't know if that will carry over to the Mits adapter with 3D Blu-ray, but it seems likely. The Mits and Samsung DLP displays with the $100 adapter look to be one of the least expensive ways of getting into 3D with a decent size screen. A "blind buy," though, before we know a lot more about the adapter, potential rainbow-related issues and such is risky. I'm really anxious to see the Mits Laservue with the adapter. One report from CES said it was the most impressive 3D demo going there. Problem is, that display is $4,000 and may have its own set of issues.
I'd say it's probably best to wait and see a demo before you buy. If not, you could be in for some unpleasant surprises.