interesting .... I've seen these as well, and the 13 inches/sketchy brand/fake reservoir?? setup had me laughing that these were gonna start showing up on quads. A tree branch would almost be better than a blaster shock but I would be highly concerned in snapping a shock.
@AWK - interesting site you found the SIE shocks=doodoo, but they do have some nicer looking rear shocks that would be a cheaper alternative to an 800 elka though they are a brand i've not heard of as well. they do look overall better build than the SIE though