If, as you describe, there is Premises Wiring (System) on both sides of an Outlet, you are removing one of the objections to an Outlet at a switch. Many have claimed that because there is Premises Wiring AFTER the switch, the switch cannot have an Outlet at it.
By saying that a receptacle DEVICE cannot be an Outlet, but that it is "at" an Outlet, puts the Outlet further upstream on the Premises Wiring than the end, meaning there is Premises Wiring AFTER the Outlet.
I don't find this to conflict with my assertion that "An Outlet occurs in a switch used as a Controller."
It sounds to me like you are saying :
(1) an "OUTLET" is a concept,
(2) a "DEVICE" is a particular thing.
Am I close?