Wearing a kilt in and of itself is practiced by the Irish here. If you think of kilt-wearing as appearing as a full-dress Scot with all the accoutrements like a PC and Glengarry, etc, that might be seen in an unfavourable light, yes. But if you wear it in a folksy manner, I can't seriously imagine anyone being offended. I mean, outside of the haunts of the Ancient Order of Hibernians and their ilk.

Mind you, I'm the dummy who did the Ulster FC shirt thing....