I'm not sure I can see a real use for checking out every repo of an organisation (I mean, if you do that with mozilla, you better start before going for a long holiday ), but having it /possible/ is a great thing
So I guess we're pretty much alike, git-repo being strong for being service agnostic, and git-hub being more complete.
Though, in my redesign plan I got for version 2, I have in mind a framework to make it possible to implement service-specific CLI API, while sharing a same core CLI API for the service-agnostic features.
So my hope is that people will like the tool enough to participate in the development and help make the tool more feature complete across the services!