not too bad. I find, that at 6'3, 200+lbs, the "ominous" look is very effective when in an environment where the kilt is obviously causing an unwanted stir. I've found that most everyone knows rule #1, "Don't mess with a guy in a kilt". This may sound a bit overbearing, but for the most part in potentially hostile environment it is sound advice. Walk tall and stand tall in your kilt, regardless of where you are.

I would suggest keeping the ominousness to a bare minimum. No need to send the locals fleeing like scared englishmen!