Not heard of Lycra doing that, I thought the keenie cyclists shaved thier legs ?Doesn't that stuff remove all hair from legs? I've never worn lycra, but synthetic thermal underwear does. Not a manly look on the beach for blokes, totally smooth hairless legs. They may be more aero.
The underwear of my choice, both for cycling and mountaineering in silly cold conditions, was Lifa. The top layer of course being Ron Hill Tracksters.
God, did the Lifa smell after a few days of strenuous exersize.