At the beginning of his Utah sports radio career, he was trying way too hard not to be a BYU homer. It's basically impossible for humans to not be biased by their experiences and loyalties and the way he was gushing over Utah early on (remember this was before Utah was even anything special) just made him difficult to listen to. When it came to BYU he was typically a downer, but he kept heaping praise on all other Utah teams often with outlandish hyperbole. Also, it wasn't that he was positive about Utah, the way he talked was basically like he was a product of the Ute propoganda machine constantly promoting the company line (gushing about KW, P12 talent, etc.). Again, at first I think he was just trying to prove he's not a homer.
The problem is that this was almost certainly pointed out to him hundreds (or even thousands) of times by his former teammates and BYU connections and I think he was too stubborn to respond to this feedback and tone it down so he just kept going. I also think that he was put in his position to be the "BYU" voice, but then the Ute homers on Utah sports radio were all to happy to have that BYU voice constantly praising the Utes. Combine that with the fact that he never sounded like the most intelligent person on the air just made it that much better for the pro-Utah crowd. They can accept a BYU guy that speaks bad about BYU, praises Utah, and doesn't sound particularly intelligent doing it. He's a decent analyst on Xs and Os (not bad, not great). He'll run circles around Wrubell in terms of analysis of actual football, but I have a hard time seeing the BYU faithful accept him after he's spent 20+ years gushing over Utah unless he's basically a completely different person working with Wrubell. Not sure what they are thinking bringing him on, but I'm sure Hans feels validated by this hire. I honestly can't even imagine he and Greg getting along on the air, but we'll see how it goes I guess.