Thanks. I looked up the mic's pattern on the BOYA website, and it appears to be (as mentioned on the BOYA website, and in Amazon's specs) a super cardioid, but not as aggressive as many/most shotguns, which for your use might be an advantage. It's an inexpensive mic with surprisingly good specs -- let us know how it works out, and I may get one too, if the audio is pretty decent (my Vivitar shotgun mic is good for some things, but it's not high quality audio).
If yours includes the wind muff shown on the page you linked to, that's a great device to have -- drops wind noise outdoors by a BUNCH (and softens what's left). I have a similar muff for my Sony FX1 camcorder, but would love to have one for my Canon G-20, too (haven't found one yet that will fit).