Is it possible to draw ZSphere2 onto mesh, or only to ZSpheres ?
And when, how to ?
Hi , load a zsphere , go to subtools , add a mesh as a subtool on which you wanted to Zsketch on. Keep the zpshere active as subtool though , if needed scale down the zsphere so it hides in the body of your mesh , enable zsketch , start sketching. I’m not sure if they intended for this to work, so you might get some weird results compared to zsketching on a zsphere.
GREAT !
Thanks 
I love Zbrush3.5 and can’t wait to GoZ.