I was using even CV3D with those two, what a mess with the different screenmodes...
The biggest problem was stupid programs that opened the first RTG screen they could find - I think alphabetically as CV3D was then used and PIV or CVPPC were much preferred by me.
So I finally took CV3D off and stayed with those two until I got Prometheus/Voodoo3. Then I had 3 again but only 2 usable at the same time because of the sw support. I still have alternate boot partitions with P96 and CGX4 respective.