How do I use stacked cameras using multiple renderers with the scene view?

It says here: " While interoperability between the respective Lights and Renderers may be developed in the future, currently a combination of 2D and 3D Lights and 2D and 3D Renderers in a single Scene can be achieved by using the camera stacking technique."

After doing this, everything works fine at runtime but the sceneview camera only uses the default renderer and I can’t seem to stack any additional renderer onto it. The result is that while the game looks great it’s nearly impossible to actually set anything up in the editor because all of the 2D rendered objects are invisible.

Is there any way around this? The CameraSettings don’t seem to have any stacking options and if you try to manually edit it the camera is reset.