I know you said that you didn't want to hear this, but you don't need to protect your mac...
You will DEFINITELY hear about the first OSX virus the day it appears (if it does)
The only reason for mac antivirus is to scan files that you will share with windows PCs.
Apps such as ClamXAV check for Windows viruses, not those that would affect mac, so your mind should not be more at ease unless you think that windows PCs you share with are underprotected.