Hmm, does anyone around here have a closed glass display case? Do they actually keep the dust out, keeping your clean model clean until you open the glass doors?
...until I have such a contraption, my models will be perpetually dusty. With my A-10 Thunderbolt, I consider the dust a realistic weathering touch, consequential of a desert environment. I'm not sure what to say about my F-14 Tomcat though...