Sportkilt semi-formal?

[Tobus]

I have faked my way through 3 seperate formal occasions, as well as many churchgoings, and daily errands with my sport kilts, with nothing but good things said.
If I. Could afford a tank, I would have gone in that direction, but at least I had a tartan kilt to wear.

That's understandable. Not everybody can afford a tank and all the 'proper' accoutrements that would go along with it (Argyll jacket, waistcoat, etc., etc.). In cases like that, I agree that it's better than nothing if you can get away with it. And you obviously have. Ya gotta wear what ya can afford, and even traditional Scots understand that! They wrote the book on it!

But this doesn't mean that it is a true alternative to a proper kilt for dressing up, as originally stated by the person the OP quoted.