Worst part about it is that there is no ruling in the USAH rulebook about how it is supposed to be worn, other than "as designed". Try proving "as designed".
I want the USA rulebook to implement verbiage about the cage that the chin guard needs to be touching the chin, the top of the cage needs to be all the way in the J-Hooks, J-hooks are necessary (a design and IIRC a requirement for HECC, but again, try proving it), and that there is to be no slack in the straps - i.e. you can't swing the cage back and forth. As a referee, it is something I would really like to have in the book defined clearly. Not sure if HC is different.