@both of you, just curious...did you go for no middle name, or just middle name in your home nations?
My son has a middle name (my father's name, as he died quite a while ago, a way to tie him into the family). My wife has my family name.
It hasn't proven to be a problem... at least not one she's told me about!
My son's quite obviously of dual parentage. Amongst a group of foreign kids, he looks somewhat asiatic, but with his friends (especially in summer when they're all a deep brown, and he's lightly tanned!), geez he looks western.
http://with-malice.com/ - The half-crazed ramblings of a Lakers fanatic in Japan