Tbh, as much I believe that Tuldaric could have been a wonderful person pre-canister use, but seeing what he is now, I fear it's only a matter of time when he decided to turn against the awakened, I mean by the time we meet he was already doing insane stuff like summoning an infernal, which the game made it clear why it was a bad idea, not to mention his ever shifting temperament as well. Unless he decided to go through Litalia's sober routine that is.