This type of Electronic health record keeping has been partially introduced in the Netherlands, yet not without enormous backlash. There are, amongst others, concerts about privacy and knowledge of insurance agencies.
See:
http://en.wikipedia.org/wiki/E...
Although I both loved the idea of the courier (details here: http://gizmodo.com/5365299/courier-first-details-of-microsofts-secret-tablet) and understood the idea of cancelling the project, I'm not really sure I understand your reasoning. Why would a tablet, or the double-screened-courier for that matter, not fit in directly with the Windows and Office cullture?
I would be very interested in a 14" to 15" tablet running a full-fledged OS. It really would be the ideal size. I do not need a complex phone with multimedia, nor a ultra-portable media-tablet. I want a touchscreen PC!