The problem is syncing. That's why I had to Wall off the enterprise relay and have those imports/exports/sync separate.
Otherwise, someone could download events from one relay and accidently republish stuff to the wrong relay.
Or you get bizarre, one-sided threads, where your fren has accidentally broadcasted his side of the convo to a different relay.
Anyone using a different client to access our enterprise realy circumvents our client-side controls.