My question is, is it considered cultural appropriation for someone who has no ties to Scotland to wear a kilt? I have a utility kilt and enjoy wearing it. I'm in a rock band and wear it on stage, but recently got some questioning from a couple guys who said they were of Scottish descent. I don't mind negative comments from 'Joe Blow', but comments from 'Angus Guthrie' carry more weight.

If it is ok, is wearing plaid (not a tartan) permissible since my ancestors are Anabaptist Swiss/German, and I have no ties to Scotland?