I was in the same boat. I was looking at the mountain gun, and the Alaskan in .454. I settled on a 4.20 inch Ruger Redhawk in .44 magnum. It is more versatile than the snubbies and more accurate. The RH is stronger that a 629.
I have gotten 300 grain slugs to 1200 fps which will kill anything in North America. I was not even pushing it either.
The Alaskan is a nice concept and I still want one for giggles but a good 4 inch .44 mag is more than adequate.