In reply to Steve_90:
I've used them as a dedicated trad shoe for the last year or so, and really rate them. They seem to be a similar stiffness to 5.10 blancos, and have lasted quite well, though I haven't climbed a lot of grit with them.
I take a UK 9.5 / EU44 - same with all other Scarpas I have worn, and a half UK size up in most street shoes. Like you, I suspect I also have a broader front foot and narrower heel than most people - some shoes do slip on me when heel hooking sometimes, but these have been fine so far. I do have a partner who found the Maestros a little too painful to get along with. Sometimes I feel the need to take them off in between pitches, but I would rather have that than a shoe that slips.