I R2 my Super Puma all the time. In some big water and some technical creeks (as well as some small water and non technical water). It does take some work to move, but the puma is even smaller. We don't have foot cups, just 3 thwarts and that has been fine for staying in the boat. Portaging sucks for R2, but can be done, especially if you have a probe (kayaker) or another boat with you. The minimax and paddle cat (Hyside) are great for R2. I would love to try a Saber Tooth, but the Super Puma is a such a versatile boat that I won't be getting rid of it anytime soon. R1 to R7 with option to run a frame for solo or family boating.
Claimer: Someone that makes a claim that they have been there and done that, can do anything you can do better than you. I hate "claimers"