A:Answer The way this would have to work is let’s say you have 3 Eero at home. One of them is functioning as a router, so you technically have 2 access points out of 3. Then, you want to take one of those access points to your RV and take it with you. You’d have to factory reset that AP, put your RV modem in bridge mode, then add the Eero as a router to your RV setup.
So yes, technically what you are asking would work.
But Eero is not made to swap AP in and out dynamically (meaning it just works bringing AP in and out or hot swappable).