Those Aerotechs look great, really surprised they are so cheap. I might have to grab a pair.

Knickers are just another tool in the kit. I wear them when it's cool. I like to keep my knees covered when it's below 60 degrees, my knee's like me for it. I prefer knickers over knee warmers generally. I have knicker bibs and shorts for road rides and looser ones for MTB rides, commuting or around town rides, not unlike the aerotechs. Knickers are nothing special, they work for a particular set of conditions. How they look to others is not my concern.