OP never checked back, but the problem I see is that people think they can put a shotgun mic on the camera and it's going to magically pick up distant sounds. As [MENTION=178786]rob aylestone[/MENTION] says, indoors, these mics can pick up reflected sounds almost as well as any cardioid mic, so their usage in those kinds of environments usually requires close(r) micing than you might be thinking about (or able to do) with a camera mount.
I have a RØDE NTG1 which works well in my treated room, but in one open mic venue I tried it in, which had a hard back wall (reflecting 90% of the room/crowd noise) plus a front aiming acoustic guitar amp, it was only marginally different from a SDC, i.e., neither really gave me what I wanted, and I had them just a few feet from what I was trying to record!
With that, the NTG2, which is the same mic but with a battery power option is also a good choice, though you'll be happiest with any mic if you plan to put it on a boom with a cable long enough so you can optimize its position. Or, continuing to beat my "optimal camera and mic position are almost never the same place" drum, better (IMO), use a field recorder and record audio separately so you can place the mic(s) where you'll get the best sound, and sync later.