Thanks for the heads up. Out of interest has anyone tried this with Renderman?
I tried with RenderMan 23.2 and Houdini 18.0.391, I can get geometry motion blur with only 1 sample, I can't find any way to add more geometry samples. Also I didn't find any way to add velocity motion blur in RenderMan inside Solaris.
Both geometry motion blur and velocity motion blur working fine with Karma.