My only comment is make sure the TB button can't be hit by accident, I know racers that have that problem, sometimes when they get new/bigger gloves.
Draw 3D looks like if you warp your hands around the wheel you could accidently hit the button after you launch or have steer the car out of trouble.
Jon
Jon; my process is to pre-stage using the handbrake on the right side, where my fuel shut-off is mounted, and when I'm staged, I hit the transbrake with my left hand and let go of the handbrake and place my right hand on the steering wheel and use that to steer with, my left hand lightly holds the steering wheel. After I launch and make the low-to-hi shift is when I use both hands to steer but I have a safety-switch that only energizes the transbrake only low.
The only time I actually steer with my left hand is when backing up and when in hi gear, so far no issues with accidentally hitting the button.
Also, the picture is a bit misleading, the transbrake button
is actually a bit below the steering wheel grips so the button is not in the way of holding the steering wheel.