Do you think they care? Do they have rules around residency? I did a bit of searching and found people saying you can sign up and use it in Canada without issues as long as you can provide a US address which shouldn't be a problem, especially that you don't need a physical SIM anymore if your phone supports that.

However I was wondering if this is actually a good deal for us Canadians. I'm with Fido and pay CAD65 for unlimited calling, text and 10GB of data which is less than the USD60 that I saw online. That includes roaming between US/Canada/Mexico but at least right now and for the coming months, that's of little value.