I intend to include the attached file with the next upload of the Debian package of gv. While it misses some parts of a nice fullscreen mode (like scaling the document to the window, changing the windw size and tell the wm to no need decorations, or being able to switch at runtime and so on), it's useable when having a WM to make the window fullscreen (like icewm's Strg-F11) and when having set up a scaling so that the file nicely fits into the screen (otherwise some borders may show up and the list of pages is shown when there is space left)
To test is just try to gv --style=/path/to/gv_fullscreen.dat, or without path if in the current directory or the /usr/share/gv directory. Hochachtungsvoll, Bernhard R. Link
gv_fullscreen.dat
Description: MOPAC data