I've seen some videos where the person clipping the dog clips against the grain of the hair, but then I've also seen ones where they are clipping with it.. Which is it? What would be the result of each? It seems like if you were to go with the grain the clippers wouldn't really pick up all the hair and lift it up to be cut.. would it? Zoey's going to need another clip before long.. and I'd like to make sure I'm not screwing it up..