The standard design paradigm is: input (draw, sculpt, etc) with your dominant hand, hold the menu with your non dominant hand.
Now: a small experiment.
Put down your phone. C’mon, do it.
Now: show me about how big a microwave is.
Now: describe a voluptuous figure.
Now: Imagine a wire in front of you, bend it into an “S.”
Now: Imagine an action figure. Pose it like an “X.”
Etc…
Our hands are so often smarter than we are - and they work as a team. They’re Michael Jordan and Scottie Pippen. Allowing double the input will in many cases: more than 2X your speed and grace.
One potential UI solution: a single button on the non dominant controller to switch between input and menu modes.
Thanks,
Matt