Angular js + Rails good idea?

I have been using rails as backend and some basic css, js for frontend. I am the only one in dev now, but I thought it's better to separate frontend/backend for later when someone else joins as frontend. I was googling for a bit and figured angularjs might be a good combination.

However, I don't quite get other benefits of this combination(rails + angular) other than making separating front-end jobs. What are the other benefits of having angular in rails framework or any cons?

Thanks a lot!