Yeah the no hud thing does make it a bit more difficult and takes some getting used to, but it's growing on me a little and I'm starting to like it the more I play, maybe because I've finally figured the different scenarios and maps out a little. I see this game going places, but unfortunately soon it'll cost some $$$ for the official release.
Just an FYI, {KoS} now has a dedicated server for this game, it's currently passworded but will be open soon so if there is anyone interested in getting together stop by our site and give a shout out in the Insurgency section.