if I'm not mistaken you can use this .. with others will jump in and correct me if I'm wrong. I have never used one so i dint know. but judging from the measurements it should fit.
Louis Vuitton Pocket Agenda$210.00
Epi textured leather with cross-grain leather lining Three credit card slots and a long pocket on one side; a long slot on the other side holds a pocket agenda refill
Don't know about the MC, but if you go to LV's site rather than Elux, they sometimes have checkbook holders and other things that aren't on Elux for whatever reason. I've been eyeing a "simple checkbook" in mono on LV that's not on Elux.