I've been doing some work in Westport, and have projects lined up in the spring..and one downtown..usually a good sign of prosperity..never really marketed PNL, mainly because, IIRC, it's a Boston based company that bulit it...Alexander Austin(great artist, great story) did the big mural, but they used their own people...
As far as safety in these areas, I think if you're looking for trouble, you'll find it...other than that, KC is a good town with good people...and very art friendly!