Any Planning user with provisioning can view the outline in read-only mode. Meaning when a planning user logs into EAS, they should only see the applications that are provisioned to them in HSS. THen if they attempt to open an outline via double-click, they'll get a prompt that they do not have permissions to edit the outline. So the planner has to right-click and select "View" to open the outline in read-only mode.
I just confirmed this in EAS with a planning user with a Planner (non-admin) provisioned role.
My apologies if this is not that what the OP was asking.