Here is some shots of a Realms of Battle board that a friend of mine Lee Coleman is painting up for a friend of ours. He sent me the pictures to show me the progress he has made using his airbrush on this table.
Lee is using two airbrush guns to cover the boards quickly. It seems that some of the paint he was using was a tad old and thick, thus causing clogs in the airbrush gun and delays to finishing the board.
Round 1 pictures of the primer work:
Round 2 with the first coat for the desert look: