Originally Posted by
bukzin
Regarding the data only esims, shouldn’t we be able to place/receive voice calls
with Hangouts, Viber, WhatsApp etc?
Yes, absolutely! That's what most people do.
Even better is with IMS (IP Media Subsystem, I believe) in the latest build of iOS 13. If your main SIM carrier, say Verizon, has no service it will simulate the data connection on the second sim/eSIM as Wi-Fi and turn on Wi-Fi Calling so you can call and receive texts for free.