I got back from NJ yesterday. The RP works as advertised. It's not a total solution to fatige, but pretty good. I would say it helps w/ about 50% of fatigue. Unfortunitely, my dumb @$$ decided to wear a back pack instead of strapping it to the back, so I was a little more burdoned than usual. I also think a slight adjustment of the frame might help.
The best thing about the RP, vs. a regular tank bag, is that it can be completely empty and work as well as it would when full. I hated stuffing t-shirts into my old tankbag to get something that was only half as good as this.
My only qualms are the wind and access. It is very hard to "tuck in" with it even slightly. I had to push the bag forward at high speed to avoid major wind blast, but then again, I really should get a double-bubble. The main compartment opens from the end facing away from you. This is not that big a deal b/c the side pockets are easy to get at for toll money, etc.
I also don't like them screwing people on shipping. It gets to me getting charged $12 after the fact. I much prefer companies that advertise w/ shipping included, or charge actual rates, but that's just a pet peeve of mine.
All in all, I think it was well worth the $130. The quality is very good, right down to the little tags at the end of the zippers. It is easy to carry w/ the included straps and the rain guard is a nice touch.
Hope that helps,