I've used Oliviers' shaders and Semidieu's python UIs for those shaders for years (5 years or so; since they first arrived at RDNA). I don't make comics, but I aim on making illustrations with a "drawn" like effect.

Easily one the best bucks I've spent on Poser products based on the fact that I end up using the toon or dry shaders on almost every image I make nowadays. Highly recommended for this kind of work, but takes quite some practice.

 

Like the example image here using textured tritonal toon shader multiplied with duotonal black/white lineshader slightly overlayed with a dry graphite shader. Postwork is rather light on this one (some shadowing/highlighting, minor lining enhancements, saturation changes, belt buckle and belt loops etc).