For anyone not participating in the Luxology forums I'm reposting here.
We have created (and are still working on) an alternative shader for modo which attempts to replicate the "Red Wax" shader from ZBrush.
It is available here:
To install, open glshaders.cfg copy the block that defines the gooch shader and change the reference to gooch.arb to "wax.cfg" - Then copy the file from the download into your modo application folder.
When you start up modo you can select "gooch shading" from a model viewport and voila!
Enjoy, and let us know if you have any feedback.
Thank you for your time.