We use Inkscape for the diagrams in the book and keep them as SVG of course, but for inclusion in LaTeX, they have to be transformed to EPS. Instead of trying to remember to save a copy in EPS format from within Inkscape, I’ve automated that task by periodically running an svn update command, followed by a make (with a nifty Makefile). I would have liked to do that in a post-commit hook, but you aren’t allowed to modify Subversion’s transactions. Now, if only I’d thought of that months ago… :-(