Not sure about the answer, but your reasoning seems logical.
If you look at the message box when in viewer mode
![viewer.jpg viewer.jpg](https://forums.autodesk.com/t5/image/serverpage/image-id/401863i12CBEEF07210F4A2/image-dimensions/277x222?v=v2)
The only obstacle I see is the license of the different add-ins. They might mention something about this.
To get more definitive answer I would advise to post your question in the Installation & Licensing forum.
If you have Autodesk subscriptions you also could create a support ticket in your Autodesk account.
Louis
![EESignature EESignature](http://autodesk.i.lithium.com/t5/image/serverpage/image-id/1272565i464DC3DC646B4F11/image-size/original)
Please mention Revit version, especially when uploading Revit files.