I like this one from No Man Walks Alone http://www.nomanwalksalone.com/index.php/accessories/leather-accessories/sol-brown-humphrey-leather-card-holder-949.html $60 after SF10 discount. I've been very happy with it.
Sometimes an order is delayed because they have a question about it, but have not yet gotten around to emailing you the question. I would keep emailing them. It has sometimes taken 2 - 3 emails to get a response.
Okay, the Madison may be a good choice for you based on your size. Also all the posts from bigger guys commenting on how much they like the Madison cut is a good reminder there is no one size fits all guide.
I've never heard the words "spot-on" in used in the context of describing the Madison cut. Before you buy, I suggest you post some pictures as the Madison is cut like a tent with really low arm holes. Did you try on Regent?
MTO is not just about creating something crazy. Sometimes it's about getting the exact shoe you want. I did a similar MTO a few years ago with Steve and it's still one of my favorite shoes in the Summer.