In an earlier post I had tried out Vallejo's Weathering Set for Yellow/Gray Vehicles.
For Christmas I had gotten the Vallejo Dust and Dirt Pigment Set and when cleaning up the basement tried it out on half of one side of the model.
You can clearly see the difference, with the additional weathering with the pigments on the right half. I particularly like the way the hinges came out. I have not tried a clear coat yet to see how much it might alter the finish.
You can see how the right side looks, well, dusty. It looks really good in person too.