Ars detailed look at iWork for iPad:
In the end, using iWork for the iPad is a lot like going to the moon. It might be a nice place to visit, and it may even be fun to bounce around for a bit, play a little golf, or buzz around in that sweet little moon buggy, but in the end, it’s not a place I’d like to live, or even stay for any extended amount of time. iWork is decent, but there is only so much you can do for an office suite without a full keyboard and a mouse.
The shape of things to come has limits.