For what it's worth, based on my limited experience, I'd say they wear differently. My only experience is shell Leeds versus calf Malvern. Shell Leeds in my normal 11.5D was way too big, had to return. Calf Malvern was too tight in the toe box, had to size up to 12D. I believe I read in this thread that this is a common experience: for some odd reason, the 1 last boots fit smaller than the shoes.
9/18/14 at 1:38pm