Been playing with it for a few days now and I'm definitely impressed. It can do pretty much whatever a standard e6-b can do (not that hard to read, either), with the exceptions of true altitude and airspeed and density altitude (if it CAN do these things, i haven't figured it out....).
Only a few complaints: the watch doesn't come with a manual for the e-6b, I had to use the manual from a real e-6b to learn the functions. Of course, if you've ever used a flight comp, you wouldn't need the manual.
The 36 index isn't marked. You learn quickly enough where it should be, but low-light could be difficult.
Overall I love it. Very cool watch, and for what I paid it was certainly worth it. REally built to last, and the stopwatch is just soo damn cool. Weight is pretty good, too. Just took a few days to get used to seeing it there. Highly recommended. Might want to look into the snd005 as well; don't know what the difference is, but it costs more, so it must be cooler.