@Smiguell
Advantage with with eSIM is you can install multiple
You can leave your PM eSIM as in. Just make sure your travel esim is enabled and with label Secondary or Travel. If you need your iMessage or RCS, it is important to leave your PM eSIM enabled (and no worries, you won't got charged extra)
And remember when you are back in Canada, it is best to disable your travel eSIM, or even delete it. Make sure PM eSIM is enabled and set as Primary. Reboot phone and Reset Network Settings
