The problem with all these hand cannons and magnums is that you have to be comfortable drawing and shooting.....very quickly. That means lots of range time, lots of rounds, regularly meaning at least monthly.
Expensive ammo and having your brains rattled with every round limits practice. The .45 ACP is still my favorite. Very weather-resistent, easy to aim and shoot, great knock-down power. Safe to carry and kid resistent.
You have to hit well with the sprays, too.
If they are more of a gel, they have a more narrow spray.
Much more expensive to practice with than a firearm.
Cannot take them aboard an aircraft.
Not nearly as ergonomic as a handgun and good holster.
Handguns have been shown to be effective 97% of the time.
You do not have to be Wyatt Earp.
Most of the time bears charge up to you to check you out. If hollering doesn’t work, hit them with the bear spray. That should be the first option, shoot them if that doesn’t work.
If you get jumped, draw and shoot, no time for spray. I prefer a fanny pack worn in front, faster draw.
Announcing yourself is always wise, bear bells, or have kids around. Not kidding, I grew up in SE AK.