Jefe Bergenstein
Legend
Fluff wise, paladins of vengeance (like all paladins other than oathbreakers) are still devoted to fighting against evil--they just often use neutral methods to do so. So a paladin of Bane wouldn't fit the concept well. That's just the official fluff, of course.
Fluff isnt rules, and the players handbook is written from a good/neutral perspective. However the Oath of Vengeance pretty much reads straight up evil... I dont actually think you can be a good paladin of Vengeance with it's focus on "ends justify the means" methods of killing a baby to stop a demon or what not. 4E was good in that it's "holy warriors" could be of any god, and there were powers to match. I ran a 4E game set in Golarion, and one of the PC's was a Chelish Hellknight Paladin. Worked great!