How are the headphones on the Index? I'm considering a Reverb G2 and from what I have read it's the exact same headphones. I can't see them being any good - they don't even reach your fucking ears, what the hell is the point? I just don't see how that's supposed to be immersive. Worse, the G2 doesn't even have a 3.5mm jack on it, which is fucking astonishing. Currently I use a Rift S with a high-end pair of earbuds and it's very immersive.