I wouldn't want a photoshop file for the entire artwork. (Individual logos or photos is what photoshop would be good for.) The reason is that photoshop will rasterize the entire file. In order to get a good print the file should be 600dpi or more. (When color separated, the plates will print at 1800 - 2400 dpi!!) A full page of rasterized graphics would be a huge file!! In addition, the fonts would not be as crisp and there maybe some difficulty in trapping.
ps-None of my comments are meant to be gospel. Otherwise, I would write a book that provided all the cold, hard, fast answers that everyone assumes are out there. These are the things that I have found to work well with my shooting habits and workflow. Always try things out for yourself and deduce the best workflow for you.