Redshift Selective GI

No answer yet from the RS suport
I have a vdb that I want to receive GI, have it’s own internal GI, cast shadows and be seen in reflection but I do not want it to cast GI on any geometry. I have added a RS object tag but cannot seem to find the combination to get this done.

I could matte out the geo and render the scene then composite the VDB render into a full scene no VDB render but then I lose reflections and it is a bit of a hassle. I hope I am missing the obvious and there is a simple way for this to be set to self illuminate but not cast GI. I need the GI in the scene from the skylight and sun.

I think Arnold does this good.

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