Yes give it a go and ask me any questions :). I was hoping someone makes use of it. It's tightly coupled to Redux, but not React. I don't think it will work great with ember, and I say that because Breezy doesn't require any router or models (again Breezy is about the content state as opposed to business models). It reuses your Rails routes much like Turbolinks.
How complicated would it be to do something like this for Ember, is it tightly coupled to react and redux? I might give a try at forking it.