See? That's my point exactly. They aren't evil just by association with a certain group. Some of them have their own agendas, like Delorus, he even helps a group of Sourcerers to escape, which is the reason, why his fellow Magisters beat him. He is still a Magister, even when you meet him on the Nameless Isle, but still won't hunt you, he can join you and help you to repay your help. He even doesn't care, when I tell him, that I'm a Godwoken, seeking ascension. He still serves Alexandar at this point, so being a Magister, he could kill you, or whatever, but he doesn't. Because being nice is an actual thing.