i dont have a gopro, but it would be a mix between tank and helmet for me. i have 1 camera so it goes on my helmet because its my pov; not the bikes. if i had 2 i would have one for the tank and helmet. i personally perfer the helmet because it isnt stationary and actually captures the shit you want for the most part
the adhesive should come off with rubbing alcohol, i dont think it would ruin the matte paint, but im not sure. those mounts use 3m VHB.
Elka 3 way shock|Penske fork valves|Leo full titanium & CF|Hyperpro steering damper|GB frame slider & engine casings|Woodcraft clipons|Pazzos|ZG|Proton