Pretty interesting. A little overwhelmed with amount of choices. Also not sure what to think, I will have to do example app and see for myself. It does look very promising. I really like that it builds on the work of others instead of reinventing the wheel.
It is cool that I can use 3 different engines to talk to sql db's, but maybe don't tell me that right away. I think it is more interesting that your architecture is so flexible and maybe show me how simple it is to get started.
Also, mentioning Meteor, totally not needed.