I used the swivel holster with wire hangers for the Victory Model stateside and the M15 overseas. At Ubon, Thailand I worked security at TOC most of the time, and was allowed to use a locally made spring-tensioned cross draw holster on a web belt in 66-67. (I also had some definitely non-Geneva convention Keith type hand loads in the gun that no one knew about, along with extra ammo.)

So what was authorized was not always what got used.