Well I've been using the Zire/wallet combo for about 5 months now and here's what I think so far:
1. It is working out as I had planned as far as that I can capture with the paper, and then create new tasks as needed when I get back to my desk.
2. I find I am using the Palm very little when I am away from my desk, but I do still find it just necessary enough for a calendar, meeting reminders, and when I need to look at all my tasks for something so that I can't quite ditch it..
3. I am thinking of possibly stepping down to the business card sized notecards instead of the 3x5" since I am not writing that much on each one, plus it would be easier to fit in a normal pocket. I currently often wear cargo pants just to have my palm pocket on the side which is a little annoying.
Overall, I guess I'm pretty happy with how it is working out..