While that might be true it brings up other concerns. You're on your alternate SD card that you loaded with music or videos and you want to use an app that has those resources on a different card. I guess you have to swap cards just to use that app, then you have to swap again just to listen to your music again? Want to eliminate that hassle by dropping a 32GB card in there, according to newegg its an extra $80 on top of the phone's price.
Its a bad and clunky solution and it negates any benefits the built in multitasking gives you. Can you even keep an app running if you swap the cards?