While I am not terribly fond of this thread, since the idea of changing ones alignment to gain benefit from classes on opposite spectrums is really power gaming(just make a new charecter). Most of the arguements here are easily policed by other players. For example I ran a table where the Chelaxian bard, who was offically neutrel, seemed to be the one who advocated the killing of everyone even goblin children. He would make lecherous and disparedging remarks to the female Sanerae Cleric and I could tell she was becoming a bit offended(in charecter only). Her character asked the bard to stop, he replied "it's the devil in me, I can't control him"(I had too admit that was really a great response). However, in character he went down from a critical sword strike. And while he layed there bleeding out the Cleric decided not to heal him and deal with the undead that were attacking the party, even though she probably could have channeled and stabalized him, and as a result he died. This infuriated the player of the bard and he accused her of not knowing her "Role" at the table. She ignored him and as a GM I explained his actions were rather evil in nature and the LAWFUL GOOD cleric made the choice to save the party rather than him. I also went on to say she was playing her character, and no one has a "Role" at the table. I then explained that if he wanted to play evil characters masked by another alignement, expect the same treatment, and his beratement of another player is unacceptable. He hasn't returned.