Generally speaking, when it is cool enough for me to need knickers then I really need lightweight tights. The portion of my legs that aren't covered get cold and I wind up grumbling to myself about it. I am just a cold-weather wimp who needs more clothes than some others do. That being said, if it is sunny and 65 then I am back in sleeveless and shorts - but by 60 my feet are getting cold and I want my knees covered I will have a broader comfort range come early spring.

I love my Mavic mtb shoes, but should have probably gotten the next size up. With the right socks it isn't a problem, but I was reminded of this last Saturday when I wore my long wool socks on my ride and things started going numb...thankfully not on both feet.