Thanks for the replies guys.
I went and tried on a 9.5 D this afternoon and to my surprise it seemed to fit almost perfectly, despite my foot measuring a 10. How is it possible that a 9.5 D feels wider than a 10 D in the sides?
Looks like I am going to have to exchange a couple pairs. I am having a hell of a time getting sized, every store I've been to only carries "D" width.