I've been on the road the last few days, and of course the iPad has come along for the trip. Let me tell you, it's the perfect mobile device and serves all the basic business needs that I have so far.
It's small enough to take in restaurants and quickly connect to their wifi network.
It's big enough to easily browse websites, check email, respond to emails with good detail.
Now it won't completely replace my need for a notebook, there are several things I still need the macbook for, but I have found I've spent more time on the iPad doing my work then my notebook.
I've also really enjoyed showing it off! I think I've probably made 4-5 sales for Apple