I am pretty sure that many of you remember Gene Autry wearing a buscadero gun belt built for two holsters, but Gene only wearing one holster on the belt. I always thought that was a peculiar quirk but recently I have been watching some really old western movies and have noticed that it was fairly common for the actors to do that. Even the young John Wayne wore a rig like that in a couiple of movies.
I guess it was a Hollywood thing to make the gun belts that way and it was an option to wear one gun or two. Sort of strange, but not really I suppose.