In general I really like eveything I've seen and heard from the guy. He looks comfortable in his position. He is honest and doesn't mince words. He has the player's respect already. He understands the game and played the game himself.
If I was to get picky I might admit just a little aprehension I have about his fondness for trick plays. I have some good knowledgeable Steeler fan friends who warned about this. They say things like "you'll love the guy, right up until that double reverse call on the 9th play of a drive where you've been consistently pounding the ball down field", which of course we've already seen....