another thought - I was telling a friend the other day that the American version of XX is Dutchess & The Duke.
I know they really sound nothing alike, but hey! boy/girl voices, limited sonic palette, somber tunes, it works!
on the other hand, Dutchess & The Duke have a (dark) sense of humor
and steal from Leonard Cohen, The Kinks, and The Stones instead of...The Human League, I guess?
so yeah, go check out She's The Dutchess, He's The Duke.
on the other hand, I don't think Dutchess & The Duke have hairstyles nearly as groovy as XX, so maybe this analogy is fucked.