I got a G930 about 2 weeks ago and it works great, so far.

I've used it with my guild, with Skype, with Google Hangouts... anyplace that requires a headset. Works fine, not sure what you mean when you ask "does it work." The battery life could be better (~10 hours), but the receiver sits in a USB hub extender with a long cord, you can use it plugged in.

As headphones, they're way more comfortable than most, have their own volume control, mute/unmute, and application control buttons (like start/stop/next/previous).

It supports taking audio from two sources (the "Speaker" and the "comm"), so you can talk on Mumble while you listen to the game audio over the headphones. Teamspeak supports it well. Also works for live voice-over for capture/broadcast. I've seen it quite a bit on Twitter channels.

You need to set up your audio sources correctly in the Sound control panel (I'm assuming you're using Windows), since it doesn't automatically replace your speakers (i.e., it doesn't plug in to a headphone jack, it's actually a separate set of audio devices that connect via USB).