As an owner of a Confederate Memorial Kilt, SCV member and an avid true history nut, I would have no problem with others wearing the tartan as long as the respect and honor befalls those for who it was designed. All of my family tree is surrounded by the War, from Virginia to Mississippi, South Carolina, Tennessee, Alabama and my old home state of Georgia. Bear in mind this-I have yet to be asked while wearing this kilt if I am racist or whatever-most people just think its neat your in a kilt, but I digress. BTW I have a confederate uniform for memorials etc- and I usually don't wear the kilt with the frock coat or shell jacket, I think it takes away from the history of it all, plus its hotter than all get out, again I digress. The main point I am trying to make is the goal of mine is to see that my ancestors are honored, nothing more never less-if others want to wear the Confederate Memorial Tartan in a kilt I say go for it for the right reasons-history,culture, and memorial.
I have had the same conversations with my wife about displaying my heritage in regards to wheather I should or should not do something in fear of offending people.What I concluded is if displays of heitage are relative to the occasion and tastefully done and in your heart you are being geniune in your purpose-people know the difference. The misrepresentation of Southern culture in todays society makes me vomit.
Also look up H.K. Edgerton for further insight.