Integrating ember.js with tornado templates

I am trying to move an application from using tornado templates (to be more accurate, it's jinja with an adapter) to ember.js. It is my understanding that ember.js has very strong opinions on how to compose the final rendered product. In practice, it seems that the whole application must be generated from ember templates on the client side. The server side just provides data in REST format.

Is it possible to have ember work and take control only on some parts of a page that is mostly rendered by tornado templates (a la jquery plugins), or do I have to completely switch to ember?