It took me 2 days to really nail the timing of stop signs and lights, so I never had to touch the brake (Bolt, so it will bring the car to a full, prompt stop without using the brake pedal). Hardest part is if you go back to something without the one-pedal mode, you'll likely scare the crap out of yourself a couple times as you brain remembers "Oh yeah, the brake pedal is a thing!"
Have you driven a standard transmission vehicle before? It's a little like that if you could always be in the gear that put you at the top end of revs.
You get that engine retard braking sense when you lift your foot to let the accelerator pedal rise back up. You only take your foot fully off if you want to brake down to near a stop. Tesla has it so you'll still need to use the brake pedal for that very last bit to come to a complete stop (less so if you turn off the Creep setting) but other than that and emergency braking, you'll not need to use the brake pedal.