The site, perhaps, does itself no favors. It seems to me the models actually carried in stores may, on the whole, be more attractive. Here are the StefanoBi shoes in my collection (again, all thrifted in San Francisco, CA USA):
This one has no markings in the shoe; only the StefanoBi logo and Vero Norvegese stamped on the bottom. Based on the styling and Norwegian construction, my guess would be that these are Vacca shoes.
These last two are sort of a mirror image. On the first the split-toe is sewn, as usual, on the outside. On the second it's sort of turned inside-out. I prefer the second. It's a beautiful and unusual effect.