I'm using the Modo Plugin, but I'm actually talking about octane standalone. I can import alembic particle caches and they render fine with motionblur with the standard sphere primitive. I found out that it's also possible to use the cache with the scatter on surface node, which makes it possible to use your own shapes for the particles. The only downside is that I can't get motionblur to work. In addition i would like to use particle attributes to control the orientation of the scattered meshes.
Edit:
https://docs.otoy.com/StandaloneH_STA/S ... urface.htmDistribution on Particles - This option will distribute the instanced on particles