The Kindle Fire HDX comes with a version of Microsoft Office, and I briefly played around with Excel and Word while I was at the store the other day. It would not be fast and easy to edit documents on that tablet. I could see the convenience of being able to view documents, though, and I think you'd be able to print them to a wireless printer.

So I agree with Irulan. Judging from the laptops that some of my coworkers are using, it's possible to get a very small, light laptop these days, and for many people they would be better suited for portable work devices than a tablet would be. Though for my job, I prefer a full-size keyboard with a numeric keypad and a much larger screen.

For me, the Kindle would be for fun, not for work.