Yeah if PS3/4 player get far enough into FFXIV I'm sure they will buy a keyboard but even still it can not compete with the sheer speed and convenience of Voice Chat. When I am in a hectic battle on FFXIV I don't have time to type out a message and explain something or even read the chat log. Like I said earlier we started playing DC Online last night for a laugh and we were amazed when we saw that it supported cross platform voice chat directly in the game so that was brilliant and it worked great.

Is mumble free or do you have to pay for servers to host the chat?