Michael,
Just a short note to say:
As I recline with my pen in hand and tablet on the bed beside me, I finally get what you're doing with this interface.
Took a while to get past thinking about what it could add to my modeling (toolset thinking) and get to 'how'.
It's really artist friendly. I love it.
You've given my wacom a new lease on life. It was becoming a glorified mouse mat.
Free from sitting at the desk, you can model with the tablet in hand anywhere the monitor is visable.
With the hours we spend hunched over the keyboard an interface with ergonomics considered early in its design is a timely concept.
More power to you my friend.