Revolvers

Why can't you get the ability to change how your holsters and gun belt is? Like maybe instead of a one holster and a off hand holster, why can't you have a double holster like Dutch has or the holsters like Micah and Hosea have? That has always bothered me even though I barely play Red Dead Online. Like in Single Player, that's understandable because you have a satchel but in online? I mean come on Rockstar!