I use Tom's version all the time.
I've got a set of like 10 colored rollerball pens, which are super useful, since I can put like 6 different patches on one sheet (not even gonna pretend that putting 10 is something I'd possibly do. that would be a mess).
Great to keep stuff organized, I can keep a record of various "versions" of a patch that I tweak while making a song, or multiple patches that go together in one part of a track.
I also made one of these sorts of things for my mixer, to keep track of how everything's set up. (mackie 1202vlz3 if anyone's interested)