I wouldn't say there are "none", but I have seen few, and I only own the one pair. Since this is my own model, it's grouped however I want it to be and could be split up into separate files if that would help, but I don't think it really would.  The problem appears to be that SP3's bone - the character's bone - is skewed or scaled in some way that is not obvious.  I guess I could manually rig each shoe, but - well - that isn't worth my time for a model that at best would have been handed around as a freebie anyway. 

Not real excited to model shoes for A3, although I wouldn't mind for Ingenue V3/Glamourous Vickie (they're actually ready made for heeled shoes, a bit over the top).

My Freebies