The regular game had one missing and one sick but present, so we did a one-off of something we hadn't tried. It was Blowback, which is an unofficial game of Burn Notice.
We quickly put together a couple of ex-spies and their civilian friends, and I threw together a pretty basic plot. Character generation is simple, but I think we went a bit too quick. Additionally, two players isn't really enough for the game. I suspect the sweet spot is 3-5 players plus GM. Maybe we should have gone with a single professional and single civilian with just the three of us there.
The mission worked well, although we stumbled on a few of the rules. I really liked the way that you do a section of preparation and intelligence gathering, then make a plan and execute it, quite separately. The four skills the game uses even have totally different effects in each phase, which adds a lot to the feel of things.
One of our rules errors was one that made things a little easy for the agents, so I think we didn't get quite the feel of things going out of control on the operation that I suspect is what normally happens.
Overall impression was positive, but that we picked a bad way to try it out. Recommended if you want to play a game like Burn Notice or find the idea of the innovative preparation/operation mechanics intriguing.