My girlfriend and were talking about our short's. Biking short's that is. We know you are not supposed to wear underwear with them. But what if you wear coolmax underwear? My girlfriend said it seemed gross to not wear any underwear. But I understand the chamois can't do it it's job then. But we are going on this long bike trip and it seems to me our shorts would last longer if we wore underwear? Very confused on what to do here.