How is that different from trying to mix frameworks in the backend? If your framework doesn't do as much, you write more boilerplate. If it does more, you writ

How is that different from trying to mix frameworks in the backend? If your framework doesn't do as much, you write more boilerplate. If it does more, you write less, but have vendor lockin. I still like using Backbone collections and models with Angular and leave Angular with the VC part.