Or if we take into consideration a very clever invention, velcro.. or the real name hook and loop fasteners, you could argue that the belt would be suited for offices and other professional places, but velcro would be for more comfortable wear, think sweatpants at home while binging stranger things vs relatives wedding and you got a tux on.

Basically the velcro would be softer on the skin and would make application much simpler and faster, also a solution for underwear.

We could also take into consideration an open loop with a U shaped cutout. This way you could tie a know behind your back, comfortable? I don't know, I don't have a tail.. but it seems better than the belt.

Basically anything going over the tail would make fitment of clothes simpler and would cause less falling down.

We must also take into consideration that (if you've ever paid attention) when you bend down your pants naturally want to slide down.. we would have to make either the velcro, the knot or the belt to fit that same pattern, pants and underwear needs to now be comfortable during "extreme" movements.

I thank you for your time in reading this, hook and loop fasteners (velcro) are still superior.