@trekkiegrrrl exactly, but the Raytrace Preview renders were all I could spare time for while I was in the development and test cycle. Here's a final BPT SuperFly render, though at half my normal size, with no strand hair grass and only 15 samples, so there are still a swarm of Fireflies evident. If I had micro-polygon displacement, the hair would look much better, and the wet surface of the hair would exhibit displaced droplets.