well.. the flash shoe isn't all that important. i got most of the close fire range covered on the fm2. So, practuically, it has no shortfalls? I liked the bessaflex cause it was to some extent the same type of camera as the sp1000 (atleast from what i can gather). It fills the gap of the sp1000 without being an unnecessary competitor to my fm2.
EDIT: I have a flash setup for the sp1000 as well.. would that work on the voigtlander?