I've lived in Alaska since my late teens back in 1991. My long gun has never changed. Always a slug loaded Remington 870.
For handguns, I've run the gamut. Sometimes based simply on what I could afford, rather than what would have been best suited. .45 ACP. .40 S&W, .357, .44 mag, .45 Colt. To this day it varies. When going into more secluded serious bear country I choose the gun I've owned and used the longest. That would be my S&W 625-9 Mountain Gun. My ammunition is 300 grain hardcast at 1K FPS. Other times, when wandering closer to town where the big bears are less of a concern and bipedal predators are more of a concern, I usually carry a .357 mag, typically a short barreled 627. Due to a terrifying learning experience, I will never carry a single action revolver again.
Back in the day, it was always a Ruger or S&W .44 mag. Now, I believe they have been replaced by the polymer 10mm in various iterations.
Of course, there are lots of the non- gun geeked salt of the Earth, end of the road types carrying a beat down old .357, 9mm, or whatever they can get their hands on.