may I suggest that the problem is that we are dealing with fickle human beings.

Wherever you go and whatever you do, some will like it, others will not.

While I have never been to Scotland or even England in a kilt, I am sure that some will have bad feelings about it, some will think you are weird, some will think you look cool and some will be proud to see another person honouring Scotland by wearing a kilt.

I think it's very much the same situation here.

Personally, I wouldn't worry. I feel that wearing a kilt is ME and I will wear what I like wherever I go, while trying to be sensitive to local customs soas not to offend.

When I was in India last it was so hot, I wanted to wear shorts.
I found out that it was not considered proper for older men to wear them, especially a visiting preacher. Shorts are worn only by young boys or those of "low social standing", I would have offended many.

The same would apply in Scotland, but only IF I was in danger of offending local customs.