problems with tablets
I've been using tablet Pcs for several years now in the field, for differential GPS and utility mapping, granted - the units we've been using (up until very recently) were monochrome based, p133 - but overall I've always been impressed with them. they operate on windows95, they're water tight, and they take a pretty good drop without a problem.
The difficulty in these things come from the lcd screen being exposed to sunlight. It heats up the crystals and the screens become unusable until the cool back down. Also, the cramp you get in your neck after carrying these things around and bending your neck to look at them - you develop stronger muscles, but until then, it just freaking hurts.
Walkabout has a new hammerhead model out that we're using now, a color LCD(800x600) and a p3@400mhz. Overall, it is a stunning piece of technology. Its a little bit heavy and it operates on 2000 professional, which is a little slow, but again - its not bad.
Could I see using one on a day-to-day basis for personal use? Maybe. If they get the weight down, increase resolution, and throw in some neat software (vector recognition for CAD) then yes.. I could. Typing is a pain in the ass, you have the tiny little field that you have to type the file name in (during the saving process) and that is always tiresome.
Could it replace the laptop? Yes and I think it will, but the current OS were built with the primary input being a keyboard/mouse, if we're going to be writing, it needs to be rethought.
This is the current makerand design:
http://www.walkabout-comp.com/products_specs_hammer.html