IPad multitouch gestures: a false good idea?

With IOS 4.3, Apple offers developers new multitouch gestures to switch quickly from one application to another with a shift to four or five fingers, or to exit an application with a pinch of four or five fingers. Very quickly, Apple announced that these actions would not be offered to the general public in this version of IOS (read: iOS 4.3: iPad new gestures will not go in the final) and they are absent IOS 4.3, least to enable it via Xcode (3.99 €) (read: iOS 4.3: enable multitouch gestures for iPad). These acts seem alluring, but are they really a good idea?