Let's say you live in England. You have 3 as your mobile carrier. 3 sells iPhone XS & Xmax but don't use the esim. How is that going to work? Will, they adapt to the esim or just use the sim card?
What numbers are you going to put on your esim? Your sim card works all over Europe so no advantage there. I travel to the Middle East frequently. I saw no carriers there use the esim. Just wondering how this is going to work out.