If someone sets up an obnoxiously tight clamshell, I will drop into 1st autocrossing. I don't heel-toe though. Its possible to just put in the clutch, push it into 1st and get back on the gas while letting out the clutch without anything weird happening.
I execute said procedure at about the 1:10 mark: https://www.youtube.com/watch?v=iWZPUtSCTyk
Seems to happen quick in the video, but it feels like it takes forever when driving.
2012 V6 Base. 6-speed. 3.31. Roush Wheel Hop Kit. BMR 38mm Front Swaybar. Camber Modded Koni Yellow Struts. Linear Steeda Sport Springs. J&M Camber Plates. J&M Panhard Bar. Airaid Intake. 93R Bama Tune. BBK Ceramic Shorties. Carbon Fiber Trac-Lok w/ Finned Cover. Hawk SR pads. GT Rotors. Spec Al Flywheel & Stage I Clutch, 18x10.5 ET38 Enkei PF01 Wheels. 285 30 R18 RE-71r tires. Boss 302 Radiator.