Hey @neuwiesener,
Yes, I would say it would achieve the same objective - this forces a two-way network topology via the use of an additional setting via the automatic tunneling feature that was added a while back.
Personally, I think it would be very edge case to need to do this via setting rather than controlling via network topology, and would recommend to use the topology instead - on your point about ‘observing’ it in the commcell, you won't be able to if you use this setting as it will not generate network configuration since the additional setting forces a client-side function. The only way I think you would be able to observe the correct behavior is by looking at netstat on the respective machines are looking for established connections. This is the same for automatic tunneling today - if the client detects network restrictions are in place, it will automatically try a tunnel - but you won't see a route generated in the network config for it since it's a client-side decision.
I’m curious to know your situation around why you are considering the additional setting rather than relying on the automatic tunneling to work by itself or applying a network topology.