I love knee warmers. I put the gripper elastic over my shorts, and they stay in place perfectly. I've almost quit using leg warmers because knee warmers and long socks work just as well. If I'm wearing longish shorts, my regular crew-length smartwool socks almost touch the knee warmers. When I warm up, I can push the socks down and the knee warmers up and/or down. My arm warmers are fleece and are almost too hot much of the time. I made myself another pair of arm warmers by cutting the toes off a pair of longer socks.
Oil is good, grease is better.
2007 Peter Mooney w/S&S couplers/Terry Butterfly
1993 Bridgestone MB-3/Avocet O2 Air 40W
1980 Columbus Frame with 1970 Campy parts
1954 Raleigh 3-speed/Brooks B72