Replying to Helmet Cam Questions

I know there's a lot of threads on these, but I read all of them and still have a bunch of questions. I wanted to get one for powder days when no one wants to film and it would look really cool from a helmet cam. I know viosport makes the best ones but do you then have to connect it to a video camera? So the helmet cam is just like an attachment for your camera. Anyone who has used one of these do you just like ski with a backpack and put your camera in there? And are there any good ones that you can buy that come with a recording system so I wouldn't have to buy a video camera? Any help would be great.