It’s not the weight, I just don’t want something that could end up in my skull as happened with Michael Schumacher (and is against the user instructions for bike helmets)
To clarify, my helmet features a self-disengaging camera mount.
For completeness, there is also the chest mounting option. I guess that could end up affecting the chest, although well designed chest mounts, like the GoPro Chestie, have ample padding and a metal plate that could actually prove protective?