That's how the Snapchat Spectacles work: one side contains the camera, bluetooth and other electronics, the other side contains the battery.
Helps balance things too, you'll be less weight-constrained with symmetric design.
that'll increase the weight though.
I think it’s better to have balanced weight, even if it means more. While it might be annoying to have more weight on the bridge of your nose and over your ears, it’s even more annoying to have an off-center moment of force.
It’s like carrying one 12-pack of beer rather than two.