I just wanted to share a heads-up that I just received from the Sawmill Creek forum. Lee Valley Tools has just introduced a mini shoulder plane and pocket market gauge. You can see them here: Lee Valley store.
I've placed my order and will have pics and a review when they come in. At $39.00 for the pair, how can you go wrong? The marking gauge looks especially useful, in that you can set and use two different measurements at the same time.
I'll have an update when they arrive at my door.