Wouldn't dare try it; I would get horribly addicted and spend loads of time on it that I could ill afford. Several months ago I ventured out of Debian and back into Win 7 only to try out War Thunder (because it was a free-bee), and did get hooked, larking around in the Spitfire Mk II and A5M, which were the two aircraft I was aiming at getting to. I had to bin my account in order to stay away.
DCS looks great, though.
Though it is a bit off topic, has anyone tried Rise of Flight? And as I am a WWI naval history fan,
Jutland and associated? At one stage, I tried the demo of
Steam and Iron. Functional (though not multi-player), it reminded me a bit of old Harpoon in layout, but both it and Jutland are a bit pricey.
Years ago, on the Amiga, a friend and I knocked up a null modem cable and played Falcon head to head. After many threats of "prepare to eat lead", we initiated hostilities in the first encounter that lasted exactly 15 seconds, ending with a cannon burst landed neatly in his cockpit. It was very exciting, I recall, to go up against a non AI opponent.