Tried it. Today I used it quite a few times. One time, coupled with kickdown, I ended up 170kmh (105mph) without noticing. Works very well, never had the dreaded red steering wheel.
Also very handy that when I change lanes it reconnects autopilot automatically. Basically makes the extended autopilot option useless, and I would never let unsupervised FSD driving between Italy and the French Riviera, too dangerous (today I had to stop the car from slamming into barriers, because she was following some obsolete yellow roadwork stripes).
I also like that I can set the autopilot of from the knob or a button, without having to double-click the steering wheel button (I like to keep TACC on when I steer manually). I moved the second button on the right of the steering wheel, symmetric to the previous. So now I have two index finger triggers