Has anyone tried integrating the Dark Eldar PC classes from Rogue Trader's 'The Soul Reaver' and the web supplement 'The Dark Kin' into their Black Crusade games?
Some ideas:
Hanging around with outright champions of chaos may well give them the same corruption as the other PCs but with no gifts, just their own mechanic. Insanity points aren't an issue and infamy can work much the same. I'd say the RT advance scheme is fine, with a few appropriate elite advances and allowing Infamy purchases.