Ah after some digging this script does exactly what i'm after.

With my setup and scene scale I have to export at a scale of 100.000 for the measurements between Blender and Moi to be 1:1 but the control is great.

https://github.com/TitusLVR/BMOI_Connector

If theres a way this can be added a feature to Moi officially that would be grand!