I've driven across the country four times using the kilt as the primary pump gas, eat and buy necessities wardrobe. That covers lots of very conservative territory, podunk and intolerant people. I got a crack from in a truck-stop urinal in Oklahoma from a guy who nearly ran away when I followed him out the door, a foot taller than him and his buddy gone. And a crack addressed to a buddy in a remote nothin' happens town in west Texas, I got a a snicker in that town from a local woman and one in Safford Arizona in a fast food Taco shop (If you know Safford, ya know what I mean.). That's it as I remember. I had a clerk in a Circle K (convenience Mart) tell me it was "sick." But soon found that that was a term for "very cool."
No telling what may have happened behind my back, but it has been safe so far. I can always fall back on the "my heritage" line, or maybe it has something to do with respect, or disrespect, for my age. Some social gatherings, or a bar might be risky, at most.
There is a concern with fitting in that is irrational. I got over that back when I used to wear medieval garb to and from SCA events several years ago. People look. Try wearing a kit on Halloween. You'll probably find that there need not be any worries.
Jbee