Source? (EDIT: Nevermind, I see the GS devs on here mentioning it)
As a project lead at my last job I championed jmvc for a new project. We had mostly good results but there was always a couple developers who were against it (and who IMO worked to undermine it).
We were building a very ajax-heavy UI for an Ad network. Think.. Adwords UI meets MailChimp UI.
In our case, my biggest worry was how easy it is to write spaghetti JS. A classic example is a page with several JS includes and they all are binding to the same event (or to different events on the same element). You're in one file working and you have funny results and you only then discover the event handlers in the other file and then you have to refactor the whole mess. We actually had that a lot in a previous project.
Also, 2 things jmvc did that excited me:
1. Easier JS unit tests.
2. Fixtures! You can build and test the JS without relying on the server to send you the json you need.
How was JVMC? Was it very useful using the MVC format in your JS, did you end up using it mainly for classes or did you do the whole MVC format?
Why JMVC over something like Backbone?
A write up on this in a blog would be awesome.
Was Javascript templating useful? It seems to be me that it would be very slow (though faster than doing async request to servers I suppose).