I didn't get the Field Notes, but I got the Moleskin ones, in a 3-pack.
I carried it in the back pocket daily and made notes during my work day, and shopping lists, etc.
Since then, i moved on to a Rhodia book with a Quiver pen holder on the side. I still carry it in the back pocket, but can't sit on it since it's fat and stiffer than a Moleskin.
But I use it for work notes, in meetings, etc.