UISplitViewController support for switching between tripleColumn and doubleColumn modes

I have an iPad app that I would like to convert from a tab bar to the new side bar when in regular width environments. My issue is that depending on the selection of the tab I sometimes need a second level of navigation, similar to the tripleColumn setting. Today I am achieving this by putting UISplitViewController's inside my UITabBarController. Can I achieve similar results with the new sidebar APIs?
Have you had any luck here? I'm looking into this as well and from what I can tell, Apple does this very thing when switching between the List and Grid view in Notes.
UISplitViewController support for switching between tripleColumn and doubleColumn modes
 
 
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