Ladies: Behold, The ‘C’-String Panty [VIDEO]

I'm far from an expert on women's panties, but it seems like they have evolved from the "granny", to the bikini, to the thong/g-string, and now the latest - the "c" string.   The manufacturers promote that you can "say goodbye to panty lines and tan lines" with this "new and exciting innovation in lingerie".    Ladies, what's the verdict - revolution in underwear, or strange and uncomfortable?