OK, I realize this post is well over a year old. But I just scrolled through this ENTIRE thread (and laughed my ass off) and nobody mentioned the real problem with this thing. It's held to the seat tube with "molded rubber bands" and it touches the rear wheel. Where would we put the odds that it eventually slips, gets wedged between the wheel and the seat tube, causes the wheel to unexpectedly lock, and makes you wish you opted for the pricier dental coverage?

(ps - hello everybody. This is my first post in fg/ss. Coincidentally my first fixed-gear (cheapy) was just delivered to my house minutes ago and I can't wait to go home and put it together!)