I can see lots of fun stuff for a pad, but I don't think it replaces a laptop for any dev stuff.

Oh, it's lots of fun...no question.

But in the last month, I read a few books in less amount of time because of my iPad. I hate using words like "increase personal productivity", because there are countless Franklin Covey zombies in the world....but I have been able to do a few more important things more easily.