GRH, the debate on lever vs. bolt vs. pump vs. semi-auto vs. single shot, will go on forever. That said, if I were going to Alaska and bound and determined to take a lever, depending on what I was going to hunt, then I would look into the Browning Lever Action rifles. I think (????) that Browning makes a lever in 7mm Mag., and .300 Win. Mag.??????
Other than that, I'd get a good bolt action for Alaska big game.
I've seen many a lever gun in camps, which were always around the cook tent, "just in case." FWIW. J.B.