Not to mention its stupid easy to add a toggle that disables your gestures, just make a bool with a name like Gesture Disable, add it as a condition in both your left hand and right hand gesture layers transitions to everything except the default state in your main fx controller
Add the same bool to your parameters list making the default state of it false, make sure its synced and saved
Then add it as a toggle to somewhere in your menus and done!
Or if you have index controllers just bind the gesture toggle vrchat has by default to your like thumb pad or something, thats what I do, the only reason you'd need to make a toggle is if you want your hands to still be able to do gestures without your facial expressions changing