First of all welcome to XMarks!

Yes, that's the XMarks The Scot tartan. It was designed I think about two years ago and then some folks got the bright idea of having some woven up. There was a run done in 2005 and again in early 2006 so there are several of us with kilts in that tartan. Do a search for Xmarks Tartan and you'll find numerous threads about it here.