Well, will see. Regen 3 is pretty strong, more so than just letting off the throttle on a manual, I think. To be safe, I will test it when the time comes. The last manuals I drove were RWD, so no loss of steering then.
We have some pretty steep hills here, and when going down those on black ice, it can be pretty tricky. I know with my ICE car (AWD CVT), had to go really slow (with ABS sounding), and trying to find some grip on the side with my right wheels.
It is my wife that I am more worried about. I don't know if ABS operates with regen, and I don't want her to lose steering control going down a black ice hill. At least I know ABS works with manual pedal brakes.