Got to meet Aaron Draplin the other day — he signed one of my Field Notes books! I debated on whether or not I should get a brand-new, never-been-used book signed, or one that I've used and loved. I went with the latter, and he loved looking through it, and expressed happiness that those little notebooks are actually used for stuff!
(By the way, he was using an Expedition notebook currently, about 2/3 of the way full full of logo sketches and lists.)