I'll keep this one short since there's just not much to go on yet.
I'm optimistic. He has a good track record of success. He recruited his own state very well despite having 2 better schools to compete with.
I don't like that he has run systems different than what UW has had success with. He has run a spread offense, and a press man defense. I know Badger fans will probably love to see a change from the soft zone the Badgers have run for the last 20 years, but they have had a lot of success with that defense. Who knows what he will run once he's here. The proof will be in the pudding.
If he doesn't work out, Paul Chryst may be available in 3-4 years.