You might take a cue from Henry Higgins, (My Fair Lady.) He showed up in tweed, (but was I think protesting the pretentious nature of the event, being kilted may be looked upon as the same.) I think a tweed Argyll with wastecoat and tie would do well in that scenario. You'll stand out, but that's pretty normal in a kilt, unless your at the highland games.
Best Wishes,
David