the Ten step Two step volume 1 (he also has a Vol 2 just out) is written in musical notation, but in the introduction he explains what musical note corresponds to what button, a push or pull, so you can figure it out yourself and write which button, push or pull, under the notes if you wanted to do all that.
For example a note on the push would be just the button number: G note would be written 5 ( button 5 push), a note on the pull would have a ' (hash mark) after the button number, so A would be written 5' ( button 5 pull) and so on. Here are the ten songs as scored in the book, played by the author:
http://www.youtube.com/watch?v=zNJ7qGFX5TI
Big Nick uses both notes and numbers on his learning materials, check out his 3 dvds on offer.
i buy this 2 books, i think they are very,very good and its no problem to write the songs as TAB in the book on the side before. Mr Guy send the books at once.
I also have the Book from Eric Martin, and also i can say it's great.