Hmmmmmmmm ... must be enemy teritory or somethin'!
I've used a pair of first generation 645AFs since late '99, I previously owned a pair of 645 Supers which were later sold for a 'blad 553 which was replaced in the studio by an RZ c.1992.
... neway, before the 645AFs I shot a Nikon F4s system for candids.
I don't shoot NASCAR, NBA or any other such subjects so "slow" AF on the F4s and slow-er on the 645AF bodies are a non-issue. I don't shoot babies but I don't *think* you'd have a problem with either an AF or an AFD
I still use the RZ for portraiture though