michaelleung: Right, because a small PSP screen is more than enough to enjoy your comics.
Bingo. I wouldn't like to read a comic this way, and I'm sure that nearly every single comic book artist will hate the format. Aside from a tiny low-res screen doing their work no justice at all, it also encourages (almost requires) lazy panel layouts. How can you lead the reader's eyes over a page when there isn't one?
This sort of thing'd be fine for something like a webcomic, or a newspaper cartoon. For anything that takes actual effort and heart to create, it's going to pale in comparison to the proper hard copy.