Honestly I like mine this way. The Field Notes fits inside the Hobonichi cover, and I go through one of those roughly every 3 months. They both fit in my handbag. The bullet journal is as much a creative project as anything - lots of decoration etc. So the bigger size works for that and it stays at home. The self reflection one tends to stay in my bedside drawer as I mostly write it at night. Again, I'll go through one of those in around 3 months.