When I was doing searches on YouTube for tutorials/lessons on Scribus, one of the videos was made by Steve Czajka. It showed how Scribus was used to create a Brochure. Both Gimp & InkScape were also used during the process.
I thought I'd share that info here. If the Gimp people use InkScape, then it must do something that Gimp doesn't. And if that is the case, then all Gimp users might also want to include InkScape in their creative process. *shrug*