The only time I went trekking in Alaksa was in a VERY heavy-bear area, and I carried a .45-70. Screw pepper spray. I'm taking him with me. At one point I came upon a first-nation local who walked with me and said he was glad I had a gun, too, because he was afraid of the bears. (That particular part of the trek was in Canada, and on the Alaska side of the border I never saw an unarmed local.)
That was a very special area, though. I've never carried either gun or spray anywhere else, in keeping with my earlier post on this thread. I MAY start carrying spray situationally, though, since I'm now in Colorado and thus arguably now in more of a "bear territory" than I have been in the past- though granted not grizzly. Especially if I'm somewhere with habituated bears. I'm debating the issue internally. I'd hate to leave my daughter without a father if I can help it.
So I guess I'm still unlikely to need bear spray, but if I do I'll need it VERY BADLY.