My feedback about G3 and cameras :
I wanted only one helmet, full-face, with the possibility to put a go pro (or other small camera).
At t he beginning, i had a go pro 4 silver, without the roller mount , so i came with this kind of mount :
If was "risk acceptable" for me to jump such a helmet, but it was very "high" mounted, and in some planes, the top of the camera was touching the wing.
So i bought the gopro4 session, changed the bold to a hex bolt :
I really like this mount, it never get caught in my lines on landing, never touch the wings, quality is fine for what i do, snag risk is quite low