You've really nothing to lose with this screen (it is free after all). That said, I would have gladly paid for this as the information in this format is extremely useful. The usual suspects such as combat modifiers are included, but I've found it most useful for the different Action tables and also the Signal Rating Table. The only missing link for me would have been a quick 'Top Ten' weapons to include on a chart so that you have something to quickly refer to for 'off-the-cuff' combat encounters, but these don't take long to quickly look up.
For best results, I'd recommend a high-quality printer (or print it at your local copy shop) and I just paperclip mine to one of my other GM screens for usability.