Great thoughts Bob (as usual!). As a UMPC enthusiast I wanted to share a quick perspective. Since I bought my first UMPC about a year ago, I think I can count on one hand the number of times I've written on paper. I'm not counting any credit card authorization signatures...been plenty of those.
I ink as much as I can directly on my Samsung Q1P UMPC, using a Bluetooth keyboard only for heavy-duty content writing. Main reason:
all of my ink is searchable in Windows as it gets indexed in my own handwriting. No need to transfer to text when you have searchable ink.
Along the same lines: business cards & such. I use OneNote Mobile on my smartphone to snap pics of business cards, UPS tracking numbers, etc...these are then synched over as images right into OneNote where they....wait for it.....get OCR'd in the background and get indexed. If you sent me a pic of your business card, I could copy the image to OneNote and do zero conversion, yet I could search for your info and find it quickly. We'll get you over to the UMPC side soon....