by jomarchan » Jan 10th, '13, 14:24
Just a thought, but the Horwitz wallet from Martin Breese may suit your purposes. Not a z fold but can accomplish the same thing and also in the spectators hand. It has a massive ID window as well. A bit more expensive than yours but with care should last many many years. I have had mine for 5 years now and it still looks as good as new and I use it often. Hope that helps.