Ah, thanks for the pictures! They are much clearer if still rather large. The movies are pretty convincing as far as the suspension goes.. nice!
About wheels, well they definately look like really nice/serious wheels! But even a decent 20 inch is pretty much bullet proof when it comes to warping (at least compared to larger sizes). That's not to say i don't appreciate the fact that the Downtube's wheels are great!
Also, they more i look at the Downtube (particularly the sprung model) the more it reminds me of a Moulton, and that's high praise i'd say.