The normal way of could be create multiple eclipse projects and switch from one to one. The result is not that bad, you just need to import the version into Eclipse and work on that. Still, you have to bear with multiple projects in your eclipse and live with it.
I personally don't like that very much. With the Linked source function, you just need to edit the path of the source switch from different version and test them. You don't have to do other things with eclipse any more. So, your Eclipse UI is clean now.