I wonder if the Fishstick layout lets you do quickzoom like you can with the control stick by using the analog-ness of the trigger.
The one where you do the first zoom, then if you click and hold you'll do the second zoom then immediately fall back to the first zoom once you let go of the stick.
The one where you do the first zoom, then if you click and hold you'll do the second zoom then immediately fall back to the first zoom once you let go of the stick.