> "Most things QueryStorm does wouldn't be possible in the office apps model, e.g. hosting SQLite."

Odd, what problems would you have hosting SQLite with an Office App? I've got a solution that could work if you're interested, it's a bit of a hack but I've done a proof of concept before that shows it works... Essentially you can run your own local web server as a service, and have the Office App make use of this service. You could even get the web server to start when Excel starts.