I think there's also another BF member who took the time to construct his own set.

http://www.youtube.com/watch?v=bS2yvBo8EMQ

I also added bumper wheels and a mag unit, just never made a new video
It's wicked, you guys really don't know what you're missing.

My lbs also got a set of the e-motion rollers, it'll be interesting to pop in one day with my bike and compare the real thing to my home brew version. I've seen them in action though when a couple of guys were testing them out a couple weeks ago. They obviously look much better, but also appear to respond a little better to subtle movements, and they have a combo flywheel/adjustable mag unit which looks very sweet.