Sections are producing quite unexpected display mode and are bringing ghosts to your scene. I thought they are clipping the 3D view exactly the same as Levels but they are not.
Levels act with shadows pretty much as Clipping Planes.
Skylight Shadows in Rhino are awesome, so having them working correctly with VA is important for me.
But I do want shadows to ignore clipping planes :). The problem is not shadows cast by invisible objects on visible objects, but that invisible objects are being shaded. Clipping Plane is working just fine, but of course it lacks functionalities of the Sections.