Obviously we all (or I'd at least hope so ) run through our forms on a regular basis. How many also run through them with someone attacking you? Doing this will slow the process down a bit, as readjustment for the attacking purpose has to happen, but IMO, it'll give the person doing the form a much better understanding of the nature of the attack, rather than just running through the form either a) not knowing what the meaning behind the moves is or b) just having someone tell you "This is what this move is for."
Mike
Mike