A regular wallet can be used.
Peter Nardi explains how this is done in the DVD.
There is a little verbal direction to steer away from 1 set of four cards, but other than that, any card can be named and Heirloom works.
PS: Hope you enjoy the paddle. My problem was I could not stick with one routine which did not allow me to have a smooth performance. Find a working routine to start then build up from there.
On the border of our minds lies a place where dreams and reality are one, a world of magic...