Been playing it for the past couple days, and in all honesty I'm incredibly surprised PCG hasn't done a write up on it yet. It's massively multiplied the ARMA community, and launched Combined Ops to the top 5 Steam best sellers. The mod has had 2000 players at one point in time, which is obscenely high for a mod for ARMA. The mod itself is gloriously fun, and incredibly easy to install. Host an event? WE all want to know how the PCG staff deal with zombies, ARMA style.
Otherwise, my steam name is Tarz08 (UTC -8). I generally play with a few guys I know IRL in the evenings, but it'd be nice to have another person to trust in the game. Always reassuring to know you have more guns than the bandits do.