Re Vlad killing Jhereg vs non-Jhereg -- I don't have the textref in
front of me, but my memory says that Vlad only turns down work for
three reasons:
Person whim
Risk not worth reward
He doesn't do Easterners
Everybody else is fair game, including gods and demons.
Mind you, Vlad *does* get a lot more work killing Jheregs than, say,
Dragons. But that's because assasination is a cultural thing in the
Jhereg, not because Vlad has a preference for killing Jhereg.