I'm going to stay away from the eyecap debate, but snakes don't breath water in to hydrate themselves, they drink... I think your reasoning behind that advice is a bit off. By that same logic, fogging vs misting really shouldn't make a lot of difference as long as you reach the target humidity.
Edit: On the chance I've just never heard about that and I'm wrong, could you tell me where you got that info? It's just so far removed from anything I've ever heard my knee-jerk reaction is that it doesn't make sense.