Hey, so me and a couple of friends are getting this game just for DayZ, and according to this guide: http://postimage.org/image/3qjpivx9h you can get Arma2: Free and then buy Operations Arrowhead and save some money that way. However I've been unable to find any other source that says this is possible, do you know if it is? Or is there any downsides with doing it this way?