Hi, Sniikki,
What you are referring to, we call a "hybrid mount". Such mounts have problems when placed on the mesh, and cause problems when Honorbuddy is making decisions.
The problems stem from the fact that Honorbuddy has two disjoint navigation systems— one for 'ground' navigation, and one for 'flying' navigation. There currently is no viable 'unified' navigation system that can operate in a reasonable period of time.
We disallowed hybrid mounts to prevent having to address the thousands of boundary conditions that we were encountering due to the architectural necessity.
cheers,
chinajade