I can't speak about the 22" barrel version, but I can discuss recoil with the 28" barrel. Recoil is not bad at all. There is a big difference between a .50-95 and a .50-90. Bullet weight of the .50-95 is typically 300-350gr. As you well know, .50-90 bullet weight can range from 450gr up to 700gr plus. This makes a huge difference in recoil. I shoot an 1868 model .50-70 trapdoor with 70gr FFG and a 425gr bullet and it kicks more than my .50-95 with 83gr FFG and a 343gr. bullet.
I am considering having my 28" barrel cut down to 24". I just don't need the length, weight and mag capacity of the long barrel. 24" seems like a very well balanced size. I'd expect a little more felt recoil, but I wouldn't expect it to be objectionable.