Talking of protecting your gear, with the rough and ready appeal of the GoPro it’s important to note that they’re not actually indestructible. And when a new case costs upwards of £60 quid it’s a good idea to keep the outer lens as safe as possible by covering it up with a lens protector when it’s not in use.
One good idea is having a soft bag to put it in when it’s in your pocket or pack, a better is to invest in a proper lens protector pack. GoPro will sell you the one above that covers the lens in and out of the case, handy if you like using it both ways.