This is by far the best solution for anyone who wants to have separate spaces in browser storage for each part of their online lives. Now I can finally open multiple sessions to the same site and expect links to open in other sites with the corresponding online presence.
This beats the multiple browser profiles approach natively available in Chromium based browsers, because links from externals applications might not open in the correct profile. The same quirks apply to multiple Firefox profiles too. Being able to select which container certain links should always go to has solved at least 90% of my frustrations!