I wondered the same. For $21 a pop for the cover...you could buy 4 or 5 of em' and replace em' every trip for all it's worth!!
The spider looks high quality and tough...but not sure about the guard. They have some real neat powder coating options...and they seem to back up what they build. The only thing that worries me is all they have in their gallery is pics of show trucks all jacked up....half of em' look like they have never put a tire offroad. Makes me wonder....
I emailed them about the progress of the 8.25 spider....we shall see what they say. I also invited them to LOST....!
I may order a cover soon....for $21, I dont think you can go wrong. They aren't too far from me anyways...in upper Michigan.