Acknowledges the school he supports - which is never in doubt. Yet is capable of being somewhat objective in his comments and if he's calling a game for your team against his team, you don't feel overwhelmed by the homerism.
Mind you - if you are on the school's broadcast team, as Hans is now, then a little more homerism is expected. I'm speaking of the level of homerism I like in a general broadcast.
And when someone from another school is calling a BYU game with that kind of homerism, I'm pretty tolerant of that as well.