i sw different variant of it, not from many teams but with different characterics. Playing an guard below the basket have advanatages in the corner defence, while is weaken rebounding a lot. Some play with a bigger guy in the front to disrupt the passes with the long frame, but this works not with every big dude.
Normally i saw it with undersized teams(PF at C), but believe a 2.20 C would be hidden in the Middle.