I missed this when it came out almost two years ago NT Wright on Gay Marriage. I have been mostly impressed by everything of Wright's I read or hear. I do have a complaint that he is reflexively pacifist (he denies this, and may have a good counter argument), and is immovably convinced that a world without the NHS is unthinkable. Those may simply flow from being an Englishman of his class, so I weight them lightly.
I admit that I never considered the repeated binaries in Genesis and beyond as evidence that complementarity is a central theme and intent of God's. It just never occurred to me. It seems like a remarkable insight, but I will have to let it sit in my mind for awhile.