I played through on Evil first. I think I have on most of the Infamous games. I want to kill stuff without any penalty.Whoops. Yeah.
And good choice on the good playthrough. The evil playthrough ending is terrible and made me want to stop playing the game period. Evil Cole was understandable. Evil Delsin is an incredible douchebag. If I'd not played good first and just had a couple trophies left to grab I probably would have quit there.