He was guest fill in host on KGO-810. I believe it was on a week-end, and he called himself a contrarian. He didn't yell or scream at all, but pushed more of a moderate line. No joke. He did this for about 2 shows, then he switched over and started the scream fest. First two times though, he did stress a more conservative position, but he tried to do it in moderate reasoned tones.
Each show, he kept evolving, until he became the screamer. The sister station picked him up as a full time host, and the rest is history. I do know for a fact though, that it is an act. He was either acting then, or now, but he went through a personality transformation kinda quickly.