Prototypes would certainly make sense since the whole guitar was a prototype. The gold pole pieces always make me think "Evos", but of course that's irrational since you can get gold poles on any
Dimarzio pickup, as far as I know.
When did the first production guitar with Breeds appear? If I'm not mistaken, Neville first showed up on the
Fire Garden tour, which would have been 96/97. If the Breeds first went into production around that time, I would think the theory of prototypes would be solid.