Good for him that he managed to get around that. But personal, face to face interactions are much better are gauging how a person is going to be when joining a team. Any sort of team. People on paper sound nice, but when you meet them they are a bit off. I have a scary knack for this and can call out caustic people after the initial interaction.
In a strangely wonderful way, people who have conditions that would make their 'productive' work in an office impossible have found work and even success as a remote team member on the other side of an email alias and irc channel.
That said, managers are more comfortable when the know their folks a bit more, but they generally are watching for things to go off the rails and head that off rather than whether or not the code is up to standard.