I attended a Creation Con around 1993 in San Jose, CA. Suited up as a member of "Starfleet Marine Highlanders (Cochrane's Own)"--kilt, black leather sporran, gold-braided Starfleet Next Gen shirt, and a kilt belt I modded with a Starfleet insignia.

Didn't have a Cochrane tartan kilt, though.

Got a lot of pics, and a smiling nod from Patrick Stewart. :-D