Can confirm. We do something like this (2 days in, 3 days remote). We have one mandatory day and then each team has a designated day where their whole team is present. I never minded going into the office anyway because I live in a fairly small apartment, so it's nice to have dedicated space away from home. The only downside I've experienced so far is that the all-teams day can be very chaotic, with more disruptions than ever before because everyone tries to plan everything that is more than a little involved for that day.