I've now taken my 800 and a bluetooth keyboard on several business trips, and find it more than sufficient for me. I would even say that with the addition of Notecase (I use the Pro version, but the free one is also great), I can write very complex documents. Notecase is a tree-editor: expandable/collapsible nodes on the left pane, and a word processing pane on the right. The only drawback is the absence of spellcheck -- which requires aspell, and I can't find that for the 2008 OS.

Still, I've written several chapters of a book on it.