I love looking at "frozen" color options but I don't know how anyone actually owns one (given the maintenance, etc) unless their car is more of a "show" car than a "go" car.
You would ruin the paint at the track (and it isn't easily fixed), you would ruin the paint if a bird craps on it or if you don't clean off bug splatter ASAP, you can't polish it to get rid of swirls, etc. For a car that gets driven around town on the weekend, never sees a track and never sees bad weather then maybe. But, to me, that isn't what an M3 is about. So, beautiful to look at and drool over but only something I would own if the car was a show-type car.