Good question; a Mountaineer at it's thickest point is a hair over 1 inch (1-1/16 roughly). It gets thinner as it nears the tip, it's a great model for fine work.
In the past I have only updated the custom order book status once every few weeks. I'm making it habit to update it at least once a week now.
http://adventuresworn.com/pages/custom-order-status
Your production guess was lose, but one thing to take into consideration is that not all orders are knives. Some of them are bucksaws, patches, mugs, shirts, etc., so we actually produce a bit less knives than that. We're currently averaging 25 to 30 per week. A few months ago we were only at about 12 per week, so we're improving. We have two full-time knifemakers and two part-time knifemakers. We love the idea of improving our process so that our customers don't need to wait. In a few months we may very well have a 1-2 week wait, perhaps less.