The legs ride up to my crotch under my tights and/or long underwear. I can pull them down and they will stay for a bit, but it seems like they are always right in the crease between my leg and my torso. I don't wear them under bike shorts.
I guess I would need grippers to keep them down! But, I am glad I bought them, as they really kept me warm when I was x country skiing in NH last month.
I want that Ibex bra. I am having real issues with cold, clammy, sweaty bras and winter sports. It's so much an issue with cycling, so maybe they will be on sale this summer.