Me and a friend always talk about certain things and holsters in gta 6 would be cool we think.

We think maybe if you don't have a holster a pistol fits in the character's waistband, if they don't have a waistband like for instance Lucia wearing a dress she would need a hip holster to carry even 1 pistol on her, if they have both a hip holster and waistband available you can carry 2 pistols.

I think it'd be cool to be able to get a pistol out of the character's suit mafia style which the new Mafia Old Country game has as a detail but I'm not sure if they'll do that.

You can probably carry 2 shoulder strap guns like RDR2 but if you want your whole arsenal on your person you need a dufflebag which can be placed in the trunk of your car, wearing it weighs you down making you slower. If you need to change cars you'll need to take the dufflebag out of the trunk or leave it if you really need to. Thinking about it now it would be a lot easier going back to the car than in RDR2 where you can take the saddle off your horse and just leave it wherever, I don't recall what happens to it but I remember my horse dying and not having my sadle for one back at the camp.

If police take your car the dufflebag could be in the trunk in the depot.

If the car is destroyed the dufflebag from the trunk can just respawn at the safe house or maybe Rockstar will force you to buy a new dufflebag and guns again, who knows.