Thanks. Looking to do helmet and hood mounts and was worried about durability and if the video would be "jumpy" especially when mounted directly to the sled. I have seen plenty of videos on youtube and they seem good.....though they also all seem to be on flat & freshly groomed trails too....hmmm
I am used to the battery death in the cold. Bought the olympus tough a while back for still photos for this reason but even that has shutter problems when things get below zero

and lets just say the shockproof claim was not true after my "field testing"

it has some issues....oh well