How to have Segmentation (and other) presets from the scene carry over to data imported through SlicerRT?

[was directed here from Slicer discourse]

How do we set certain presets for the Segmentation module (or other display-related presets) when importing contours from RayStation using the SlicerRT module? For instance, I would like Slicer to default to a low (0.05) opacity slice fill when contours are imported through SlicerRT, and for the 3D rendering to be turned off by default.

