Makes sense, one map for the body, one map for the face. Mapping looks good. 

With separate lips it is hard to make a natural transition between lip surface and face skin. Whether the advantage of larger scale weighs more depends on the shader used and personal preference. 

It would be 0possible I think to use an altGeom for the face, just the same geometry, same number of vertices, so same morphs, but different UV mapping. 

Anyway: nice work.