It has been my experience to wear the kilt is to take on a bit more thick skinned attitude. If I was offended easily, I would have a stroke at a flogging molly concert.

This being said, I stake claims to the Gunn clan by way of sept Wilson. Which, if one thinks about it, is somewhat of a step-child mentality. The idea of a "sept" being grafted in, allowing those of said sept to dawn the tartan of the proprietor is similar to that of a step-child wearing his step-father's tartan.

I still maintain and agree with Jock that one tartan is preferred. As some of you may remember, I considered for a time dawning my fiancé’s tartan, only to realize I just wanted an excuse for another kilt. Through some wise guidance I have since recanted. That all being said, I may still someday wear another family tartan (being that of my father's line who I am currently estranged from entirely).

Also in line with what Jock said, I never really question a person’s reasons for why they are wearing the tartan they have chosen to wear, and if they feel the need to divulge the information, if it is not an answer to my liking I smile politely and carry on in conversation. I have too much on my plate without the addition of making it a personal quest to berate those who I disagree with.
I am glad you raised the question and it is definitely something that has been a hot-button issue for quite some time, but as the old saying goes, “when in doubt, drink more scotch.”