I've spent parts of the past two weeks exclusively using the iPad for work. Once for an entire day, several times for four hours at a time, and a few more times while travelling (ferry and airplane). This is my review of that experience.
Tools & Apps used:
~iPad 2
~Miniot iPad cover (for stand)
~wireless keyboard
~wired headphones (for music)
Apps used for work:
~Docs2go
~Dropbox
~Pages (Word alt.)
~iA Writer
~Numbers (Excel alt.)
~Analytics
~Teux Deux
~iRdesktop
~Calendar
~Evernote
~Safari
~Mail
Work done:
~Writing blog posts
~Lots of email
~Access and edit Google Analytics/Adwords
~Access Fundraising databases via remote server
~Do A/B tests on web pages (using Safari browser)
~Writing business proposals
~Present and review marketing materials (mostly PDFs)
~Review and edit excel files
The short of it: it was great. I was able to work entirely from the iPad with some soreness in my shoulders from looking down on the table and had some difficulty adjusting to life without a mouse. I never need a laptop, but I'm happy to have a desktop computer still.
The long of it: it was an enlightening experience that told me that I can work well on a mobile device and not lose functionality. I was also given a glimpse at a post-mouse world, though it did feel awkward to use the wireless keyboard and then reach to the screen to maneuver around a document. Writing (either emails, notes, or more formal documents) was dead easy, and thanks to apps like Dropbox, Docs2Go, and iRdesktop, I was able to do more complex work with ease. In a couple years I can imagine mobile computing to be significantly more popular than it is now. Next year I expect to do remote days from the iPad up to once a week. That, and I will have more expectations of what can be accomplished while I travel from now on.
Biggest benefit: I felt that it was much easier to focus with the iPad since I couldn't have multiple programs on the same screen.
Biggest drawback: the world still has flash so Analytics (the app) does not do Google Analytics a justice. That and I couldn't find a great angle for the iPad to be perfectly comfortable.