You should be able to. I did this back-and-forth for over a year before it was easier to change account regions. I'd have a US account and a Canadian account, a

You should be able to. I did this back-and-forth for over a year before it was easier to change account regions. I'd have a US account and a Canadian account, and would switch between the two to get content from the other side of the border. You can even sign in to one account for iCloud, and another for the App Store, if you wanted to. The only thing that didn't work were automatic updates; they'd only get downloaded for the iCloud account.