Maya & Blender Import/Export only armature - Please guide

Hi, A group of my friends are working on a demoreel some in maya and few of us in Blender.

We what to share only animation between maya & blender (armature/bone data or empty objects only: no mesh,texture)

what format would you suggest will fullfill our need.

We tried the fbx export/import. Blender seems to have export but the import script is quite incomplete.

Please Guide
Thanking you,