Would a captain or fo be able to do a full flight from the panel though? Or is it strictly emergencies?
Speaking for myself, I doubt I'd be able to do a full flight to the standards of an FE Proficiency Check. However, with the help of the FHB, I'd be able to accomplish normal and emergency procedures as required, albeit a bit more slowly than I expect of a PFE.
The FAA does not require a "panel check" for pilots, but only requires the training in case of emergencies.