I never expected so many responses, this has been fun. I especially like the one about being incarcerated. The local police know me pretty well. A while back, a LAPD car pulled up next to me in the Cobra, rolled down his window and said, "Paul, if you don't slow down, I'm going to have to tell your wife".
I, too, think this idea is on the wrong side of good judgment. The thought of it accidentally activating at speed has kept me from trying it. Once, while testing my brake bias at about 50 mph on a six lane wide road, the rears grabbed first and the car spun the so quickly that I could not catch it. Fortunately, I just bumped a curb and bent a few things.
An interesting thing is the lack of curiosity in some of the responses. When you have a car with this little weight and so much horsepower, don’t you want to know what it will do at full throttle, or how fast it will go around a curve or how far you can carry a drift? I had to find out all these things, mostly on an autocross course by knocking down lots of pylons.
Handbrake turns are “slow” on an autocross course? Yes, I guess that’s true when you are speaking of high horsepower cars. In my car, I can nail the brakes hard to get the nose down, jerk the steering hard and pop the clutch in first and execute a fast 180 spin. I learned to use the handbrake to initiate the spin on less powerful cars. Once the rear is sliding, you can pop the clutch to burn the tires around the pylon. My problem is that on a rally, I have a 250 pound Navigator in the right seat and my own fat ass in the left seat holding down the rear wheels. So, unless the road is wet, neither of these methods works.
In any case, this is just a “theoretical exercise”.
RS