I did yes, back in may.
It is however not exactly what Alain could do, because it using the not publicly available L1 adaptive controller software.
The DJI software is using something clever by giving up yaw control and spinning. I would not like that with cams under it
If you are in search for redundancy now I would personally not recommend the flat hexa, but using a Y6 or X8. Those are the best options for surviving an engine out situation.
It is not something that is easily solved in software although there is already done great work.
Cheers,
Menno