I agree, sticking on the uppers may be a issue. Maybe I don't understand the whole process, but couldn't they do the final (i.e. the sole onto the upper) assembly of a MTO shoe in the recrafting dept? I don't get why you couldn't choose a different welt color, welt stitch, or edge dressing.
Those look more like the "Deep Dark Brown" shell from the trunk show than the normal AE "Brown" shell (Horween Dark Cognac).