I got it and played a bunch with a group over the weekend, it's quite a lot of fun. Lots of chaos and stuff happening, with plenty of room for support roles like ammo and medic if you don't feel like doing anything else. Proximity voice chat is built in and works well too, and is real proximity (ie; enemies can hear you too if nearby). The automatic mic activation for a few seconds when you die can be absolutely hilarious (or disabled if you want).
The graphics are nice and simple which I like, it lets me focus on the game more and not have to deal with FPS drops or performance issues.