On my last visit to Scotland, back in 2006, I flew wearing an OD Utilikilt. I didn't get any looks or comments that I noticed at the airport or on the train to Glasgow. Once arrived at our destination we strolled around town since we were a bit early to check in to the B&B. We stopped into a Tea Shop for a cup of tea and the two ladies running the place complimented the look and said they thought more men should wear kilts more often. On our return, a older security guy at the airport also complimented the look as well as the sgian dhu tattoo on my calf. From my experience I'd say most either don't notice or don't care one way or the other.

YMOS,
Tony