Experimenting with render queues I noticed that AABBs are rendered in the main render queue - I did not find a way to change that. Maybe it is possible to add a functionality like setVisible to nodes that sets AABB & attached objects RenderQueueGroups with optional cascading.
Additional what would helped me debuging my code is if the AABBs would be coloured according to the render queue they are in, so some way to change the material for the AABB would be nice too.