I wouldn't want that kind of interface. I'd worry about it retraining my mind to think "Braking = pulling this paddle", and then one day I'll need to make an emergency stop, and I'll pull the paddle instead of hitting the foot brake and ram into whatever I wanted to avoid because the regen braking was insufficient.

I suppose the system could be designed to detect a user suddenly putting a death grip on the paddle brake and apply the foot brake automatically.