Earlier quoted context omitted.
We use Ember + Rails at work and if we didn't start with an Ember expert contractor we'd have been sunk. Ember is definitely a winding maze of stuff and until there's a "Agile Web Development with Ember 1.0" book, it's still very difficult to just jump in from scratch. Still, once we've learned Ember we're very happy with it. Backbone is just too small to start any medium/large app, and Ember has a decent community b…
What function is the Rails component serving? Is it just a REST interface or is it also acting as a separate HTML interface?
Also you should look into active model serializers for integrating rails with ember. I think it's yehuda Katz' preferred method for Jason serialization from rails to ember.