This is a brand new situation that maybe not many people have thought about. But if anyone has and has a work-around I'd love to know. For international travel I plan to switch over my phone to using the eSim on Project Fi, using my google phone #. I've been playing around with it now though to see how it works. The main issue I have is that when I switch over to the eSim my phone changes to my google # (of course) but then so does my Message + app. And that means it can't get any messages sent to my normal verizon #, even over wifi. It doesn't connect to my normal account.
Project FI will forward messages that it receives to my verizon number, but I haven't found any way to forward messages from verizon to my google number.
Anyone have any suggestions for a work-around?