I mount mine like this I know what you're going to say, that its in the way. Well for me, it isn't. When playing, you look past it. I've been playing with it like this for over 6 months now, and haven't had any visibility issues.
It makes great video especially if you tilt your hopper a bit, because you are seeing exactly like you would in 1st person
heres what the footage looks like https://www.youtube.com/watch?v=aMjvfNeFW7Q#t=22
I do mine the same way now. I've tried a few other set ups but this seems to be the best. I will say my mask is a bit heavy, but I also have a fan kit..
good overall vid, but the audio testing isn't quite...right. my ghost-s sounds waaaay better. tourney vid i made awhile back for proof. 12min so you might wanna skip through it. http://youtu.be/PWtkGeda4dM
thanks. hard for me to watch because all i see are the mistakes i made lol. but yeah the ghost-s sound quality is definitely better than shown in the original vid you found. as much as i love my ghost, i still think the replay 1080 xd is the best overall action cam for paintball. it doesnt have 1080p @ 60fps but it does 1080p @ 30fps and if your mostly uploading to youtube then that's all you need since they currently don't support over 30fps. that might be changing soon tho, not sure.
I like the Contour, it's low profile and quality comparable with the GoPro. It is also much easier to tell if you are recording or not as it has a switch rather than a button. Another cool feature is that it has the built-in laser so that you can get the angle right while wearing it.
They also have a wide selection of mounts, including rail mount.