All joking aside, is the argument against e-brakes (in a racing application) basically the weight penalty and the tendency to spin out when trying to use it in a turn? Or maybe the lack of reaction time between realizing the hydraulic brakes have failed to pulling the e-brake? What about emergency braking in a straight line if space will allow?

Regarding the cool down period, I can see how the brake pads could stick but wouldn't the e-brake shows be ok to use for parking since they would have been relatively unused during the racing? Or would the rotors still be too hot?

I don't have much road racing experience to this is all educational for me, I appreciate everyone's input. One of these years I'd like to get more into racing.