Has anyone tested doing this in the same way you would on Xbox One / PS4?
Person B makes Switch 1 their main console
Person A makes Switch 2 their main console
Person B logs into Switch 2 using their account
Person A logs into Switch 1 using their account
Theoretically both should then have access to all of each others library...
All Accounts on Switch 1 have access to Person B games, plus person A can get their games as long as they are logged in
All Accounts on Switch 2 have access to Person A games, plus person B can get their games as long as they are logged in