Does this have the same effect as positive ScaleMesh and then FlipMesh???
How does it differ, if at all?
Scalemesh : Scales all vertices of a mesh by the specified scaling factors.
Flipmesh : Flips all the triangles in a mesh.
Negative scalemesh values I believe inverse the vertex co-ords along with the effect of the triangles facing the opposite direction, while Flipmesh alone just flips the tris.
Well, flip mesh would just be like scale mesh,-1,-1,-1. Only with scalemesh, you get to define which axis to invert, if not all of them.