I was pleasantly surprised yesterday to see a Motion Computing F5 on stage at the keynote for Interact 2008. It was used as part of a great demo.
There followed a great demo of the real value of UC. what was great about it was that it was not run from Office Communicator or from Outlook. It was a demo of a Point of Sale application that had been "Communications enabled" and it was run from a Tablet PC.
The demo scenario was a customer asking a staff member if they had a particular product. From their tablet pc the employee can check stock in other nearby stores. He could then see who in the other store was online and available to take a call.
The call was then initiated from within the PoS app using the tablet's speakers & microphone. On the receiving end the incoming call had a subject indicated that the call was a stock enquiry for a particular product and the app automatically displayed info that was contextually relevant - their stock level for that product. This means that at the time the call is answered the person already knows what it is about and has the information required to help at hand. A very compelling demo.
This sort of scenario is perfect for a slate style device - which is more usable when you are standing or moving than convertible style devices. My full post on the keynote is here.