The thing about Lawful Evil, as “Doing Good By Doing Bad” suggests, is that they don’t have to be invested in Evil for Evil’s sake. Or at least they can get their charge by watching Good squirm over having to sign. Or when they have to be polite, afterward, when the mutually-beneficial business is concluded to everyone’s specifications. It’s a rarified villainy, to be sure — but after a while, one’s evil palate grows more sophisticated.