Hi Ruby.
Nice looking knot for sure.
I use thick and wide leather belts and can't ever see myself using this knot for trouser augmentation. I have to wonder how easy it will be to adjust for proper sizing. One might have to make some hardly visible, permanent markings to speed the tying.
I am going to try this in climbing webbing to see how it can perform as a bend for a sling. And if I can untie it easily enough after a hard loading.
Thank you for bringing it to my attention.
SS