So, you wouldn't allow photos of buildings where a company's logo was on their building? http://commons.wikimedia.org/wiki/Image:NYC_Top_of_the_Rock_Pano.jpg is a featured image on commons and has logos, even if they are a bit blurry. A clearer example is http://en.wikipedia.org/wiki/Image:Melb_cbd.jpg
If we can be sure that we aren't breaking the law, then I'd be very happy for Commons to house such images. I really can't say whether we're breaking the law to copyleft an image with a copyrighted logo in it, I certainly hope law isn't that restrictive.