What is the relationship between Facebook Spaces and the Oculus Avatar SDK?

Is it the case that we use the Oculus Avatar SDK now, and when Facebook Spaces opens up to third party content our avatars will be replaced by the Facebook ones if our apps are launched that way?

Or: is it the case that these cartoon style avatars will only ever be available inside Facebook Spaces, and all third party applications will use the Oculus Avatars, and users will maintain two avatars?

Thanks 

PS. Is Oculus coinciding the release of Go and Spaces? If so, is the lip syncing feature of the Avatar SDK also purposely being timed to be released on or after the release of Go (so our apps don't steal the show)?