I've shot Super Blackhawks with standard .44 Magnum 240 grain loads. Though the standard Blackhawk frame bashed my middle knuckle on my middle finger something fierce until I adopted a two-finger grip, the SBH grip is a bit longer and didn't seem to give me that problem. Some have reported that the square triggerguard of the SBH punishes them or even cuts their knuckles during recoil. Personally, I prefer the feel of a DA revolver, specifically how the grip stays put during recoil rather than allowing the gun to roll in the hand. I also feel that I get a more consistent grip, which means I get more consistent accuracy. When I shoot a Single Action Revolver now, I hook my pinky around the bottom of the grip to keep it from rolling during recoil.
Personally, I'd say you should try shooting both before you buy if you can. I don't think the .44 Magnum is a particularly hard cartridge to handle in a full size revolver with a moderate length barrel, but you are going to need a comfortable gun to enjoy shooting it. And good ear protection.