I have some Busse PBFs, and they are extraordinary knives. They are also some of the most underrated and undervalued Busses. Instead of trying to find something like a PBF, why not try to find an actual PBF on the secondary market? You can probably find one for not much more than what you'd pay for the others, if you are patient and diligent. (Hint: Look for the naked ones; they're less expensive and more available.)

(No, mine aren't for sale.)