E-Readers. Are they for distributed workers?

I read the article on the E-Readers in the Wall Street Journal today. A colleague of mine has the Kindle and is gaga over it. He said "Imagine. I can carry all my books around, search any book I ready and wirelessly buy books online". Sounds great. What is even better is the fact that the Kindle can display WORD documents and PDFs. Smart. Wonder when this will be a must have for all. I plan to explore this more.