Ditto
I can see uses for it.
It doesnt strictly have to be belt mounted, it could be rigged on a vest, or a belt & yoke etc
I wouldn’t be holstering as the standard way of carrying, but clip on and you can carry by steadying with one hand and placing weight on the body
Or go temporarily hands free, standing around waiting, grabbing or operating a prop, picking your nose ……. Many uses
I wear a full frame DSLR and 300mm lens on a clip on holster - I don’t run around with it like that, I may steady with my hand and run, I also don’t holster to the belt that’s holding my trousers up
I can fill my face with a burger and quick draw for a
photo opportunity - and I have done so many times