Every car with OPD I've been in also had an option for a more typical "coasting" style, where you need to use the brakes. I've been driving cars extensively for 22 years, and picked up one pedal driving during the test drive of my EV. 4 years later with 95% of my miles done using OPD, the urge to smash the brakes is still there if I need to stop quickly. Having said that, I have no idea how new drivers who spend 100% of their time on OPD will handle actually-using-the-brake situations.