It might make a slight difference to me. Some of the sample photos on the site look pretty cheesed. In particular, there's one of a tiny little green person on a tree stump. It really does look pretty awful and to be honest I find it hard to understand how anyone could find otherwise.
The one with the lady in the pink dress amid flowers also doesn't look so hot in my opinion, but I could see how this would be more open to debate. The lady and the background appear to have photoshopped together not very well so I can really see the artifacts of post production and she doesn't really look like she's in the scene, but rather standing in front of it in a studio. I also think her dress might look good in a painting but really doesn't look very good in a photo. The goblin one is getting better, but still her face looks kind of blurred in a way that really detracts from the realism that a photo could convey - I also think her hair doesn't really fit the rest of the picture at all, kind of that "work really hard on my hair to make it look like I don't" statement going on.
If the photos had the quality of work that I see, for example, coming out of a film studio when they get it right (say Legend or Lord of the Rings), I would have a much different opinion. Of course, they can't do this considering their budget, but I'm of the opinion that if you can't do it right, find a different way to do it. Maybe the actual book will have some better pics in it, but I don't like what I see so far. Good photos can capture a mood, a thought, an emotion. I don't get that from these, but maybe other people do. Everything seems stiff and orchestrated instead of romantic, mysterious, seductive, etc.