Your friend was born to wear a kilt. There are a couple of threads about the Scottish Jews and their close affiliation to the Gordon tartan. There are so many tartans he can wear, service tartans, California, Gordon. Hey if he enjoys maple syrup on his back bacon - Maple leaf. If he doesn't like maple syrup or back bacon - Maple Leaf. He wears it well that the only prerequisite, tell him this is from another non-Scottish kilt wearer (and English Gypsy* at that ).

*75%/25%