An Open Question for 'Jock Scot' (and Scots)

[creagdhubh]

As a Scot I am happy to see people of other nations wearing the kilt, whether in a traditional tartan or in North American Utilikilt non-trad styles.
What does irritate me is people who play at being Scots and insist they know better than native Scots. I once spotted a guy at a highland games wearing a Cunningham tartan kilt and this being my family name I struck up a conversation with him. He turned out to be an American and was absolutely insistent that the tartan was Robertson and not Cunningham.

Ugh, that would frustrate me to no end, Alex!