Since you live in an area with real stores
you could always cruise Nordstrom Rack for a shirt with French Cuffs since they have decent prices and a liberal return/exchange policy. If he isn't fortunate to be Norwegian like us, maybe you could get him a subtle Dale of Norway type sweater to wear when you're rocking the bunader.
You could also make or buy something off of CafePress, you know, one of those dorky shirts or mugs that says "Pray for me I am married to a Norwegian" but you could change it to dating