But it does not "just work" by any stretch. I ran into the same typical crap that I see with Handoff and Airdrop. It "just works" until it inexplicably stops working, for no apparent reason, and nothing but a reboot fixes it. Even getting my two Macs to see each other was a PITA (a 16" M1 Max, and a 14" M1 Pro). I thought at first it was because one was hardwired (but also on the local wifi), but no. Disabling ethernet made no difference. Multiple reboots, no dice. Later on, 10 minutes after deciding to give up, it just decided to start working, a fact which I only discovered because I lost control of my mouse on one machine, not realizing I had moved it to the other.
Now that they "know" one another, we'll see if it works more consistently now.