[@Eisenhorn] Given the highly psychic nature of the party, we'd probably end up getting an NPC commissar attached purely to ensure that the two psykers stay in check. Though I imagine BLAMing would only really occur if you managed to manifest something truly horrific/warpy/daemonic. So maybe the Janissary. Oh yeah, in one session I managed to go through like seven characters after each managed to be critically hit by Chaos Space Marines we were holding off. Many bloody-filled explosions and bone fragments. But yeh, if you're trying to SURVIVE as a Psyker, then fettered power is the way to go and only using powers when absolutely needed... or there is the fun way.