Now, it is perfectly true that the Walker is heavier than the Ruger. But it is only about one pound nine ounces heavier. I've carried my Walker all day long with no difficulty. If I were going to be hunting an animal that is capable of hunting me, and that will definitely come at me if I don't drop it with my long gun, I would want the Walker's punch available and I doubt I would begrudge the extra weight. I do acknowledge the modern train of thought that lighter is better, but I don't necessarily agree with it.
Especially if my life is on the line. And if the hand gun is expected to stop a large and angry bear at a range where said bruin and I will both suffer powder burns, I will take the Walker's 500+ ft.lbs. of energy over the Ruger's 350 ft. lbs. any day. I have no doubt that the Ruger is reliable.
However, in over forty years, I have yet to have any black powder revolver fail me, and given the robustness of the Walker's parts, I think it very unlikely that it will fail in the circumstances being discussed. Still, to each his own, as my old Grannie often said.