Pro Sites & Blog Template plugin

So, I am about to start learning Pro Sites. I don’t see where a client can sign up for a site and use the templates I set up in the blog template WPMU DEV plugin.

Are all the sites they get scratch sites that they have to set up and figure out?

I would like them to get a site and it come with the menus set, widgets set etc…

Do these two sites not work together at all?

Please assist! I am excited about trying ProSites. I think it’s wpmu dev’s flagship.