From decades of carrying a handgun.
Fanny packs are some of the slowest things to draw from.
I tried many different ones.
If you wait to draw your side arm until after the spray fails. Sprays have a very short range.
You are to late.
Now if there are two people one can back the sprayer up with lethal force.
A lot of bear attacks happen in hunting season when one is hunting other game.
Making a bunch of noise defeats that purpose.
The bear copuntry I am familiar with is SE AK, BC, and Pac NW. It is often very wet. Holsters don’t keep your weapon dry enough. And shirts/jackets that cover the holster slow down the draw.
A dry bag, velcro fanny pack worn in front solves those problems. Announce yourself and don’t take women along.
I would only reach for bear spray after I have drawn my weapon.
Most hunting is by rifle, long range, 400 yards or more. Game is more tuned into scent and the sound of moving through brush. I wear bear bells only when hiking.