The reason that I started carrying was because of Cougar. Bear seem to scatter everytime they see me in the area. The reason I like the pepper spray idea, (although I do not own any) is because with a gun, you have to be accurate, and if a surprise attack did happen, it would happen so fast Im not sure if I would be able to get an ACCURATE shot off, then if I did get a shot off, bear have been known to keep attacking even after shot, so it is not a sure thing. It may just make them more mad.
With pepper spray on your belt, all you would have to do is discharge it. You wouldnt have to point it in the direction of the bear even if they are on you. For anyone with any experience with that stuff, anyone in the area gets affected. It seems that the bears want NOTHING to do with that stuff, and will choose FLIGHT, not fight when it is discharged.