Multiple SplitViewControllers in iPad Application

We are creat开发者_如何学运维ing an iPad application that uses multiple SplitViewController. From the Apple documentation I understand that the SplitViewController needs to be the rootViewController of the window.

Does anyone have any experience or suggestions on how to create a navigation scheme that switches between multiple SplitViewControllers?

Its seems that this is not a supported design. We have since decided to use one SplitViewController at the root, and swap out it's views when the screen changes. This seems to work pretty well.