He plays that one quite a bit Walrus. It's a little Maton, an Austalian guitar. He and Tommy Emmanuel are pretty big on them. And the only other acoustics I've seen either of them with were small bodiied Martins. Urban does play a Fender electric usually.
Here's TE with one of his smaller Matons, one that he plays regularly. This is the song that really impressed me when I saw TE play in Dallas. A relatively new TE song, I'd never heard it prior to seeing him perform.