I was able to get something of a 3D toon likeness using Character Creator/Headshot, but I never able to get the quality I require, so I bit the bullet and have instead started learning to design and rig characters in Character Animator (2D).
I thought you might be interested in seeing how I can still exploit my iClone model as a reference for a so-called "360 head" in CA4.
I've mocked up a head tilt that will have to be rigged now in CA4.

Animating now to life itself --Walt Whitman