You should definitely work with Turpin Ballard/Thorfinn Sporrans. http://www.thorfinnsporrans.com/index.html

His sporrans and workmanship are really beautiful and he has quite a few options to make yours unique. And, for a handmade custom sporran, he's affordable and you get something no one else will have.

Here are pics of the one he just made for me, with its two detachable flaps (one of his unique innovations...)in matching leather and red fox...