add slider behavior similar scrollviewer.defferedscrolling

Question

I'm trying to add a deferred binding for a slider that is bound to a listview's scrollviewer. I'd like to have a delayed binding similar to the scrollviewer.IsDeferredScrollingEnabled="True". 

I've tried hooking into the thumb's drag completed and updating the scrollposition after, but the problem is that the user can click on the space above/below the thumb, then drag...and this does not trigger the thumb's drag completed event, or IsDragging property.