The invaluable Doug Gray, who has pretty much my favorite comics blog), has Carl Barks's venture into the opposition camp, the Porky Pig story "Porky of the Mounties." Bugs and Porky weren't characters he liked, and the story isn't one of his best, but just seeing Barks work with the Warner Brothers characters is kind of strange and fun. I would say it's like a Marvel guy working for DC, except they all did work for DC and vice versa.
It's also a reminder that whereas the comic book form added a lot to the Disney cartoon characters, it didn't really do the same for the WB characters. There are some characters who maybe have more dimension in the comics than they do in the cartoons, like Porky (who has Petunia as his regular girlfriend, and isn't quite as big a patsy as he is in the animated shorts), but I don't feel like they're improved as characters the way Donald and Mickey were improved in the comics. And that's to say nothing of all the WB characters who were watered down, because they couldn't be as violent and vicious in comics as they were in films.
In part this may just be about the general superiority of WB shorts to Disney shorts, at least during the period when these comics were popular. The WB directors would add things to a story and make it better than it would have been in comic book form. I can't find it, but Thad Komorowski once posted a Michael Maltese comics story (non-WB, as I recall) that he also used, with some variations, for A Pest In the House. The comics story was funny, but Chuck Jones's cartoon was much funnier, and contained better-motivated and more well-rounded characters. In Disney, that kind of excellence was more likely to come from a Barks or a Gottfredson than most of the animation directors.