Since you’ve already spent a bundle, and since GBit ethernet switches are dirt-cheap, I presume that price is not the determining factor.
Personally, I like my endpoints to be LAN-accessible. That way, if someone in my household wants to play something off of their phone (be it a podcast, or a voicemail message from grandma), they can just connect to the endpoint via Airplay.
And I can still use OpenHome/UPnP to play Internet Radio. (Yes, I know that’s a feature implemented in Roon 1.7. But it’s not implemented as I would like it to be.)