@davek - what exactly is it that makes a bowl a bowl for you? Is it the design of the filled-in corners or the shape of the roof on an aerial shot or what? Your Signal Iduna Park has filled-in corners in triangles, for example. So did Wolfsburg. So did Dresden. (I accept you might not have seen any of the stadia.)
From the German grounds, it is actually Nürnberg that stands out as a bowl for me (with the oval shape and big D behind the goals). But that can't be what you are talking about since that kind of thing is nowhere to be seen in the designs you are referencing?
Here's a pic of the Allianz Arena interior, for example:
Couldn't get more of a bowl than the look of that exterior but the stands are close to the pitch.