(con't from Part III)
The Capezio SD103 men's social dance shoe for ballroom or character use (photo) is an example of a men's dress shoe that would make an acceptable organ shoe.
This is a lightweight shoe with a 1-inch standard heel that's available in both wide and medium sizes; these might also be worn into and out of the building without wearing out the soles.
The soles of these shoes will need to be kept perfectly clean however, so that dirt and grime are never transferred to the pedal keys.
(con't in Part V)