I think this is an incredible concept! I tried to use it but couldn't actually enter in any text (FF 3.6.11) but keep at it! This is a really great idea and already well on the way to being a great execution.
I am doing a UX rewamp and trying to minimize the learning curve. The next version with some major UI modifications and support for all browsers should be out in 2 weeks. Do follow me on twitter or drop a line and I will make sure you know.
As far as I know, there was ONE GUY in Germany that managed to install it and get it running. He blogged about it under the title "That's Real RAD!" in German - but my lack of autotools skill and inabiilty to properly use qtruby as a "lib" meant that the install process was pretty diabolical.
What did you work on? Did you ever do anything with it after SOC?
I did continue to work for Google and played a part in some of the SoC activities for next year.