I mean it's not necessarily evil, it's just selfish, maybe someone who is in the search for power, just for the sake of it, and would do anything to get it, i don't see why a "Crusader" kind of character can't run around with a power thirsty mage. I think it would even be nice have two characters so different in a group.
I'm interested, i'd like to play a Neutral Evil Mage with Lawful tendencies, i'm not sure about the race, probably Tiefling, i have no problems with the shard but i'm GMT+2 so my schedule is a bit inconvenient but i hope we can arrange something out.