It's GREAT! I use it for all demos now. Starting with an email that tells me my reports are ready, linking to a report held 'in the cloud' that i can then cruise through during the demo. Really good for the enterprise customer.
Also used it extensively to 'play' with the QV9 Beta releases thus maintaining QV8.5 on my machine.
Also used it for a conference, linking to a hosted app and using that to demo.
Also used it post-SiB when customers want to show colleagues how cool the developed app is. Time banded tightly and get the Server Monitoring App up and running so you can see who looks and when.
QlikTech... Cirrius?? This stuff is too much fun for that!