I was testing out the latest Redshift 3.33 together with the 18.5 Houdini update to see if Redshift could be used for environment work and I am pleasantly surprised. I also used ACES workflow. In Houdini it's really easy to setup.
The heightmap was made in World Creator and all the materials and objects used are Megascans. The clouds in the background are 2d, but the ones at the foreground are VDB's from my VDB cloud kit. Because Redshift doesn't yet support Volume Multiscatter they don't look as realistic as I would have liked they would. I really hope they improve volumes soon.