> AFAIK you can't install US bank apps on devices with non-US App Store.
I was just replying to this comment to state you can install apps and then sign out. Another alternative (which would be painful) would be to get a jailbroken iDevice, extract the banking app IPA and then sideload it
The poinr was to create AppleID you need a phone number. You can log off or have two accounts, but to create the US one you need to surrender this info.
> AppleID now hard requires a phone number that can receive SMS to create it, in addition to an email address