This post by Iain reminded me of something I've been thinking about for some time now.
One shuto (chambering and execution) is deflect and counter-attack. Got it. The pinan/heian show many successive shuto. I think that is quite subtle and hints at a lot of possible interpretations and variations at very close range. The first spear hand/chambering motion has the potential for an eye jab, for example. The sword hand apart from the neck could also hit the clavicula or bicep. The chambering to the ear has an application against a wrist grab.
Many kungfu styles (e.g. tongbei, baji, tiger ...) have a sort of baiting double shuto that leaves one arm pinned on top of the other. Compare these variations