Maybe I am being very stupid here, but I can't see what the problem is. Pictures maybe?

When I wear a normal belt with a buckle, the buckle is in my left hand and the opposite end threads through it and the spare is to my left hip. That is the way I learned it as a child, but it was re-emphasised when I joined the Royal Air Force. All airmen were to wear their uniform belts that way as it is 'uniform'.

When I wear a kilt belt (or sometimes called a dirk belt), the waistplate is in my left hand, as before, and the opposite end (with the little metal loop) clips on to it. My waistplate is zoomorphic and there is no up and down so it could be worn the other way round. It comes off the belt so I can change belts and waistplates. I believe that my type is universal - it is certainly the type sold by all the kilt accessory shops.

Regards

Chas