Haj, hate to burst your bubble, but T2GN is right. Irvin is not a "hire", he is a novelty for the ticket, and it worked. Every time he was on, it was a stop down. Remember when Irvin and Georgie got into a heated debate about his gardener and that dimwitted lawsuit. The fact that Michael called in created more of the novelty action. He was a ratings grab, which is why they have those "shows" in the first place.
Unless you talk smack outside of sports, you aren't in the hallowed halls of KTCK. Heck, it's amazing Larry Brown has made as far as he has, but note, his career began with the Cowboys show. Again, novelty for a niche show.
The day Mike gets tiring is the day he tries "to make it on his own". He will lean on the new guy but try to overshadow him by casting calls to his buddies (e.g. Emmitt, Deion and who knows, maybe Alvin Harper ;D). Trust me, he will be great for the first few months, but no matter how crazed we all are by Rhyner missing Greggo, the Ticket will always be this market's Number 1 sports stopdown by a long shot.
KESN going local all day and dropping their crafty 5a - 12p hosts, who have no clue about Dallas outside of Romo and its location on a map.