I'd say that both Gunn and Faith are underclass rather than working class, and in a sense Gunn sells his soul a second time precisely to become upper-middle-class. I mean, Xander's initial working-classness is expressed by having to be on a construction site every morning. Faith didn't work the graveyard shift in a factory, f'rex.

nwhepcat: it says a lot about USian culture that the model for Bayliss was more upset about his fictional character being bisexual than the model for Gee was upset about his fictional character being assassinated! (Although it's possible that you don't consider the movie to be canon.)