We never got to a point with the RR2 prototypes that I ever was happy to actually climb with it. It was very heavy and didn't tend well. It wS also going to cost $500 which didn't seem worth it even if we did get it to a point where we had functional prototypes. Notch was able to choose a manufacturing process that keeps the price the same as the original while tackling the wishlist of no dropable parts, centralized tending point, and rounder edges.
There are some sacrifices, its longer than the original RR, it is a little heavier but not as heavy as the RR2. The length is the biggest negative that I can think of. I shortened my bridge a hair and use a small biner.