Why type if you can just drag and drop? Select a (or multiple) text (or image, data, chart, song, video, even an app) from App 1, drag it and drop it to App 2.
Also, by reducing the memory and power consumption by half during the multitasking, it will give zero impact to battery life and operation speed.
Now, this sort of thing is what Apple good at. NOT a half-baked multitasking offered by Microsoft and Samsung. So I'd prefer Apple to take their time to make it right, rather than release it first (yeah, it works but not good enough) and claims it as FIRST while other companies copy.
Microsoft IS RUNNING A FULL OS . . . . so the multitasking done on the SP3 and other Windows 8 tablets isn't half-baked.
On every Samsung devices a user has the option to turn MT off, so that point is moot as well.
Apple wasn't first to a lot of things, and copied a good portion of Palm's WebOS and Android in iOS6 and iOS7, so that last part is also moot.
I guess in the end the hypothetical yet somewhat complicated approach mentioned first is okay.