Here is poor pic of double vs single. I think standard EG is double. I got the double on my alderleys but find it a bit too stiff so always specify single on orders now. It should break it and lessen heel slip though Warning: Spoiler! (Click to show)
Thanks for the visual. I was confused by "double Dainite" as I was relating the double to an extra layer of rubber vs. a thicker leather midsole. I am wiser now.
Thanks for the clarification, Leaves.