Using 2 css framework in one Ember project?

I made an ember bootstrap site but I don't like the responsive look on mobile so I want to make a mobile version using a mobile UI framework .

It seems that if I can reuse the routes and models already defined instead of creating a new project , that would be great.

so can Ember allow me to do something like this?

• check UA to load a difference configuration
• load different templates but same model, route, component
• same url but different site(mobile version)

-Hao