I have a "blue jean job", and a short commute, so riding in jeans in no big deal. I'm not in a hurry to GET TO WORK, anyway, lol..... Even when my commute was 9 miles one-way, I wore jeans unless the temp was 75F+ by 8AM. Then, I'd wear shorts and pack the jeans.

For cooler temps, yeah, wicking materials and layers. You can get that stuff just about everywhere now; all my wicking stuff is from Walmart....