I wear a men's size 12 (US) shoe, which fits me a little loose. I *JUST* today received my Dessaults in the mail, size 11-13. The pocket is WAY too big, and not just long. It is ridiculously wide and I have a narrow foot. I am pretty sure the next size down would still be too wide.
I went to the local dive store to see if they had any socks that could make it fit. No luck there, but HUGE SHOCK the store had a few sets of Sporasub Variants for only $80! They had them in size 9-10 which fits me perfect with or without 2mm sock. Looking at the pocket from the Dessault 11-13 and the Variant 9-10, there is a huge difference in width, I'm pretty sure much more than is covered by the size variance* (pun intended). I don't have the luxury of trying on a Dessault 9-10 (since I ordered mine from DiveInn in Spain and am hoping it's not a PITA to return them), but I have the feeling now that the Dessault is better for a wide foot and the Variant is better for a narrow one. My Variants fit perfect and I can't wait to try them out this weekend. I can't say a thing about how they swim yet (nor would I have a frame of reference since they're my first longblades), but the removable foot pocket attachment requires no tools and looks like a more user-friendly design than on the Dessault.