Well, it looks like Valve are returning to regular blog updates for TF2 as this is the second update in a week! Much like the post about the Demoman, we get an insight into the many iterations that the scout went through to his final design.
it was done by Dhabih he does a lot of the art over at valve, especially for half life, most of the paintings of Gorden freeman in action shots are done by him.
this is probably why he didnt want it shown haha. the one that looks like a jogger is probably a 5-10 min speed paint