Maybe it's because, despite being introduced at the beginning of the Clone Saga, Judas Traveller didn't actually have anything to do with Jackal or the clone stuff. He was intrigued by the two Spider-Men, but originally I'm sure the plan was to develop a backstory for him, some motivation, completely unrelated to the Clone Saga.
It was only retroactively declared that Judas was a pawn of Osborn, just as a way of tidying up loose ends.
One of J.M. DeMatteis' rare misses.
-Pav, who did end up liking the Cabal of Scriers...