Basically, yes. But I think it's worthwhile to distinguish between physically (the original definition), functionally, and behaviorally identical p-zombies, where materialists reject the possibility of the first, and functionalists reject the first and second (each is obviously a superset of the former).

NB: "Functionally identical" is handwaving, absent some canonical method of figuring out what computation a physical system implements (the conscious-rocks argument).