Here are some videos of the Flashbang Bra Holster:
http://www.youtube.com/watch?v=77TGGEYhPnM
http://www.youtube.com/watch?v=NAYu0-BOBEo
No, it is not a good solution for carrying a full-size 1911 or a Colt Python. It would be best with a LCP, P3AT, or Seecamp.
And yes, you better keep your booger hook off the boom switch, unlike some of the demonstrations in the videos.
However, the real question is: If the firearm is small enough and light enough, would it still be incredibly uncomfortable? Being male, I have no reasonable way of testing this, but the women whom I have shown these videos think it would horrible to wear one. Therefore, I am asking the opinions of the OFCC women who are accustomed to carrying concealed handguns on a regular basis. What do you think?