Ive played with band members who have used books like that, and in general they not only contained the set list with lyrics/chords but previous setlists/songs and “work n progress” songs + Tel no of venues/ managers names ect ect, and what the rider was last time around. also the 1st half of the book is usually well ordered but the other is a jumble.. 🙂 but really although personally I had no problem with singers using the book, it did kind make me think that the audiance maybe though it a bit strange,but It never became an issue.