This is a side note for all the comments on man-bags and fanny-packs that isn’t meant to be jugemental, or against their obvious utility. But…
There are on-again, off-again trends in fanny packs as CCW (Concealed Carry Weapon) options. Both high and low end. Most such bags do still function fine as smallish carry bags, but there was a trope going around in the aughts that if you saw a guy with a fanny pack who wasn’t on a bike or actively excercising, they were carrying.
Since man-bags have become slightly more popular (even the sling version) than two decades ago, I have NO idea if this is still any sort of even incidental association, there are still tons of such bag/holsters on the market, although many of them are obviously tacticool enough to be obvious.
Again, not telling anyone to NOT buy such a thing, but it’s still a non-zero issue in ways people may look at and evaluate you.
ETA - while I didn’t intend it I do have to admit this post ties into the thread title “Cell Phone Holster” (my added italics) in a very creepy way.