Attached is an example RIB showing a cube SDS using creasing with 3 materials applied to each face. The material shaders are using uniform user parameters and layered shading so multiple shaders can shade one geometry RIB. There appears to be artifacts where the uniform value are returned incorrectly to the shader in the creases.
I consider this important since SDS and multiple materials are natural combinations for complex projects and layered shading is a unique strength to Aqsis.
Let me know if more test scenes are needed ;-)
Eric Back (WHiTeRaBBiT)