Great championship manager, but needs time. He's brilliant at the behind the scenes stuff and building a team. If he gets time he should implement some strong foundations for the club's long term future, though it remains to be seen whether being without Shakespeare and Walsh is a massive hindrance. He didn't do too well at Derby without them.
He's not tactically astute enough to be a good Premiership manager. We woefully underachieved in our great escape season, as subsequent events proved. Positive tactics and correct team selection would have seen us in the top half for most of that season, but it took him ages to work out what he was doing wrong. In the end he just threw caution to the wind, probably under the advice of the players. People tend to take the piss out of this story but it is documented (not just rumoured) that Cambiasso influenced the change in style somewhat. Also don't expect any substitutions before the 68th minute, unless there's been an injury.
He is a nutter but he's also principled, which is as much of a problem as him being a nutter. He'll probably get on better with your chairman than the idiot at Derby or our owners who are culturally quite different (and also quite inconsistent with their principles - it probably still doesn't sit right with him that his son was sacked for shagging a hooker (his son wasn't the one making the racist comments) whilst another player stayed at the club after throttling a woman).
I don't like it when people question his character, he's always seemed a fair bloke to me. The players will love him unless they're prima donnas. he just has the occasional psycho moment and is clearly very uncomfortable with the media side of the game. Having a go at journalists, often not the most honest or likeable of people, is hardly crime of the century.