I have been window shopping around on elux for some of the recommended bags and accessories and I have a few questions. Sorry in advance if they're dumb but that how we learn isn't it? What is the point of a Sac Plat? I would assume that it is not an everyday bag, eh? And.... Do they make a "day planner" type refill for the small agenda? The only one that I see on elux is just a simple ruled line one. If I bought a Small Agenda and they didn't make a day planner refill pack, would one from an office supply store fit properly? Thanks in advance folks!