Using different planes of a mate connector for sketches in feature script

Hello,

After placing a MC, can I specify different plane to create sketches?
As in creating one sketch on the  xy plane and another sketch yz plane, for example. 
That way I can have 2 sketches that are controlled from the same MC which I can also flip and rotate.

currently I evaluate MC but that returns a Csys and not a vector so I can't specify the plane I want like in a vertex.
Maybe there's a way to return a vector from MC?

Thank you.