Ahh - MysticCat - another Vexilloligist. During the dot com boom, I used that as my title on my business card. I was the "flag waver" for our technological prowess. And my "waving" was engineered.
I'm not sure that Nepal technically qualifies as a burgee, but I'll certainly give you Lower Saxony. And we have to remember (which I didn't in my earlier post) that swallow-tailed flags are quite common in the govenrmental flags of Scandinavia, such as the Danish state ensign: