ZBrushCentral

Zsketch - turning off subtool interaction?

ZBrush Usage Questions
#1

Last year produced a rapid prototyping design in Rhino. (A toy.)

Now I’d like to use the exported .obj mesh as a guide for proportions for a Zbrush redesign. No problem using it as a subtool and building an armature out of Zspheres. I’d like to use Zsketch but without the direct application of zsketching onto the surface of the subtool mesh. Can I selectively turn on and off specific subtools that would interact with Zsketch, while still keeping them visible and transparent? Thanks.
#2

My other concern is I’d like to use the image plane X without Zsketch strokes sticking to the surface.

For example examine making the skull portion of the head as documented in the ZBrush_3.5_tutorials.pdf. Wouldn’t it be nice to use some anatomical reference within the application? Something like the tutorial here. [http://www.pixologic.com/docs/index.php/Sculpting_A_Skull_With_Image_Planes](http://www.pixologic.com/docs/index.php/Sculpting_A_Skull_With_Image_Planes)