Users that move around constantly

I'd say that this is an excellent way to use Workspaces. Workspaces are a persistent desktop - that means that I log in and I see the applications just as I left them. If I terminate my session (from one client - a zero client is a good example) and then log in to another client it establishes a session to the Workspaces service and returns my desktop to me as it was when I logged off the first client.

Note that this is different from logging on/off of Windows itself - while users could do that all their applications are stopped just as they would be on a physical machine. Instead, here the user can simply stop the remote session to Workspaces and resume when they like.