My doors and skirting are all satinwood paint rather than gloss, I dont think it has anything to do with dust but they just look better, dont like the real shiny look. I just started yesterday repainting all woodwork in house which is all white, doors, skirting, radiator cabinets, stairs. I am using Crown satinwood at the moment because it was on special offer, usually use Dulux, using white because I find it discolours slightly very quickly and you end up with off white anyway. This seems more obvious in the rooms that get sun, when painting in kitchen yesterday which is very sunny doors are gone so off white they are nearly cream whereas in hall which gets no sun they are much whiter.