I do not like oil-slick (or wet-look, robo-legs, what have you) leggings. It's not that I don't think they look sexy. They do. On this model at Sass-'N'-Bide they look magnificent, like the glory of the sun. It's just that someone needs to tell 99.8% of women that they CANNOT PULL OFF oil-slick leggings like no one has ever needed to do anything. A bit like the bizarre reaction elicited by very, very big girls with fuzzy boots circa fall '06 (OH NO BEAR -- oh its a lady, phew), when larger ladies, or even just not-incredibly-modelesque ladies, slap these on it evokes a malformed barbie doll, warped in the sun after summers of disuse, or just fat robots which we all know would never aid society.
With that said, I have learned that in very cold weather, oil-slick leggings act as space blankets, insulating human heat like absolutely nothing else, and London has almost definitely not decided to stop barfing snow, so they're going on today.