Hi KB,
I've just come back from a fortnight in Canada. Roaming worked for a couple of days when I arrived but then died with nothing and completely dead with no data, calling ability or texting. So without the ability to call Sky customer service (for what it's worth) this was a non starter. As we were on a roadtrip I downloaded an esim for data when on hotel WiFi so Google maps could work.
Looking at the thread this seems to be a problem going back some time.
