Well generally where I am from, there is no one else in a kilt, no matter where I go (except the Ren Fair). So I figure I can do pretty much what I want.

I don't do ties.

I have a Crail jacket, sort of "just short" of a proper Argyll, and a Tweed jacket with no cuffs or epaulettes, and I wear both with button shirts and open collar.

Most of the time if I wear a jacket at all, I will be at least amongst the best dressed in the room, if not over the top, tie or no.

Of course I don't run in real formal circles, so take it for what it's worth (what ya paid fer it).