I'm wondering on only one thing at the moment. How long does it take for people to realize that most of their productivity/business software can be used on iPad

I'm wondering on only one thing at the moment. How long does it take for people to realize that most of their productivity/business software can be used on iPad as well. I can imagine people traveling (sales people?) with iPads 3G checking their inventories in real-time, doing their forecast reporting, sending emails, reacting to on-line customer enquires... Do you think this is something that will happen or my imagination just plays tricks on me? :)