ArcGIS and Portal generally have the same functionality... eventually. Portal user usually have to wait six months to year for new features that hit ArcGIS Online. The blog was helpful though, thank you. If I add the layer to Portal via the rest service url and then add it to my map, I get the options I need as opposed to browsing to the layer via Living Altas within the map itself.
One question though. You say that subscriber services cost credits. My understanding was that premium services cost credits but that subscriber services could be shared in a web app or story map without consuming credits, as long as you have an organizational account. Do I have that wrong?