Does AssetServer allow teams to work in the same Unity scene?

I understand that the asset server is the integrated source control solution for Unity - BUT does it also solve the issue of allowing multiple people to edit the Unity scene at the same time?

SVN (or whatever VCS you use) handles the assets, metadata and source code just fine. But it can't merge binary files - is this what AssetServer does?

No unfortunately not...

If you want a mergable scene solution, you can give this project a shot:

I haven't tried it myself.

I have created a tool on the asset store for just this: SceneSync