Comment 2 for bug 615657

Another common use case: shared directory between multiple users

Is there a technical reason (aside from not-yet-implemented) why this should not be possible?

Dustin Kirkland said on 2010-12-27 in response to https://answers.launchpad.net/ecryptfs/+question/92089 :
It is not possible to mount more than one encrypted directory automatically at logon. That's simply not how the feature works.