When you make the foreign Xbox Live account can you still play the games on your Main US account or do you always need to log into that foreign Live tag? Just wondering if it is the same as the region hopping on the PS3.
Microsoft ties your games to both your gamertag and one system. The first console you download an item to is licensed to play it. Any gamertag can play the game on that system. You can also play the game on any system if the gamertag that owns it is logged in.
What that means is if you use a foreign account to download it, you can sign back in on that console with your GT and play it just fine. You can't put the game on a usb drive and take it to your friend's house to play it without using the foreign GT.
Keep the account info. If you get a new console you can do a license transfer on the foreign account once a year to assign the game to another machine.