o.k., thx fr lnks, LD.  apparently (judging from the j. rabbit monotoon) he's using a falloff shader for the linework, but he's still not using a directional falloff shader (weaker or stronger depending on direction of  lite) due to the compositing probs it may present to end users.

p.s.  after 10+ yrs of using photoshop/poser and studying art criticism at univ., IMVHO it's not possible for somebody who can't already sketch/draw with pencil/pen/charcoal and paint with acrylic/oil/watercolour to do a presentable imitation of an oil/watercolour/acrylic painting using poser.  by "not presentable", I mean that a professional art critic would take one look at it, say "computer-generated", then move on to the next item.