The thing I don't like about the Joe Rocket back protector is that the belt feels too low compared with the rest of it. This makes the protector gradually slide up my back until it settles about 2 or 3" higher than I'd want it--it doesn't cover my tailbone. Also when it does this, the top end gets in the way of my neck/helmet. On one of my last rides I hacked off the top two inches and while it's now comfortable, I still wish it did more for my lower spine.
That video is awesome for me because I'm so used to hearing GC's bike in Cru's videos. Your bike sounds loud again, son!