This would get round the problem that powerfold mirrors are quite readily available but OEM powerfold enabled switchpacks are not.
It would be possible to include a manually operated switch as well, which could be placed in a hidden location if required.
I envisage a small module which could be fitted and wholly wired within the driver's door using either an OEM powerfold loom or the powerfold loom which I manufacture.
Just wondering.