Depends on the network for the migration from phone to another.it's simpler, but not that much simpler? I have used an esim since middle of last year, works well, and very easy to set up. EE will send you an email, or if you use a computer, will display a QR code, and then once you utilise either, it'll ask you what to name the line (gives you templated choices) and then if you want to share the data, and that's it. Later, if you go into mobile settings, you can choose which to have on, or turn one off, which lines you use to call certain numbers, it's customisation is awesome. I've travelled, and worked in 3 countries, and kept my home account as an esim and it's been seamless.
I'm currently with O2 (shortly leaving to re-join EE) and they require that I have a new printed eSIM pack to do the migration. EE didn't immediately adopt the eSIM migration tools that Apple provides because a number of us tried several years ago.
I still stand by that unless you require the use of 2x SIMs, stick with a single physical SIM card. Especially as Daz above has said he swaps between two different phones on occasion. His biggest hurdle with a physical SIM will be whether he has a paperclip or SIM eject tool on him!