I just don't think you can, in any visual way, compare a PC to a tuxedo. It is just worn at that level of formality, so using the conventions of a tuxedo really do not translate to the Prince Charlie.

I've given up trying to understand that; though I do think the PC is very good looking, and have nothing against it.

Sadly, my gut feeling says that other kinds of black jackets with a kilt would feel more at home when alone in a room packed with tuxedos.. I try to ignore that gut feeling.