One of the use cases that I can draw attention towards is cleaning up imported geometry. However, once you learn that how this selection is pretty fast, you can use it for different purposes. I figured out this one while I was working with a non parametric software where wireframe mode is used to select meshes not visible from front view. That's when I tried the same in SOLIDWORKS.(works in hidden line visible mode too)

Step 1: Open any imported geometry.

Step 2: Change your "Display Style" from default shaded mode to wireframe mode from heads-up toolbar.
 

Step 3: Now geometry looks like this. I want to remove the cylinder that is circled with red color.

  Step 4: I will use delete face and show you the difference while I box select the cylinder in both display modes. 1st is wireframe and 2nd is shaded mode.

Compare "selections" dialog box in both modes. You can see there is one less face selected which is not I have pointed an arrow towards it.

Step 5: If the operation is performed, then it will show error for selections done in shaded mode but not in wireframe mode. Additionally, you can use "Face Filter" so that no edges are selected by mistake.

It has great application when you want to remove faces from imported geometry which are patterned like select any orthographic view and simply box select!

As I said, it is not limited to imported geometry. Works well with native models too.