Now that I am sort of finished....

My birthday gift is nearly complete I.E new Sharp 60 inch 835 3d TV on the wall, new entry level Yamaha 3d "ready" receiver RX v371, new Samsung 3d blueray, a pair of existing Boston VR965's (10+ years old) and a newly accquired "legendary" BA VR12 center. The TV is wall mounted over a entertainment cabinet. Calibration coming in 100+ hours. This is my question. I have been looking at prior threads saying "show your setups". Amazing by the way and I feel inadequate. LOL. Just one of my observations is that many of the photos show the speaker grills off and exposing the guts of the speakers. Is this just personal preference and nothing else, after the pictures are taken, the grills go back on?. Do the speakers sound better without the grills? I would think a lot of dust would get in without the grills. Just wondering and think of pulling all grills off to see what it looks like.