The textures are indeed very commercial.
The biggest problem with these maps, in my opinion, is that it is too much 'close combat.' One shot kills are not really accepting of these kind of maps. However, aesthetically, I find nothing wrong with playing paintball in a decrepit city of the roaring 30s. :B I will admit though, the textures are kind of dark, but they're stylish in their own way.
Not sure whether I like KP's textures or the CTP textures more. y00tz's CTP textures are very pastel-lish and lacking a lot of colorful "oomph"...