Restricted multi-user integration is a smart move and one I wish Apple would implement. When I let someone use my iPad I hate the fact that they have full access to my emails, texts, and other personal info. Of course this is also useful to prevent kids from in-app purchases.
Totally agree. But wait, Apple is counting on everyone in the family or your friends/relatives will get their own ipads instead of borrowing yours. That'll increase profits which Google doesn't care.