biggest drawbacks to the Xtreme style are the "quick release latch" which is a set of grade-8 bolts.....meaning you have to have a wrench handy to take them loose when opening /closing the carrier & accessing the tailgate; second problem is that the assembly is welded / secured to the body up top, meaning the first time you back into something, slide into a tree or obstacle, you dent / wreck the body. That is why most of the really well designed bumpers don't bolt to or connect to the body.
Does it look cool? Yeah, I thought it looked cool. But I thought the concept fell flat when it came to the lack of a latch & connecting to the body. That design, though, could be improved upon to bypass those weaknesses.