He's fantastic.
What's great about him is that he is sure-footed and reliable in routine saves, that is, he does not generally have concentration lapses or commits blunder on easy saves, while also being capable of the spectacular.
Sometimes, you get one but not the other. You have GK's capable of making extraordinary saves but falter on the ordinary, routine aspect of the job, or vice versa, are dependable but don't ask anything extraordinary out of them.
So far, he's shown he is a complete GK. Whether it's a quiet day at the office or the fire alarm goes off and he's got to put out the flames, he's there.