Well, I didn't get over to Arizona Kilts before they closed today (I was out to late last night & they close early on Saturday), but I did track down what I believe is the source for the American National tartan sans green that Arizona Kilts is using.

Check out this link -

http://americannationaltartan.com/index.asp

This is identical to the tartan I've worn a couple of times & I'll tell ya, it's a great lookin' kilt! And personally, I think it's better looking than the House of Edgar version.

I'll still try to confirm with Graeme that this is the source.