There appears to be some mix-up of information between those leather TM-08 carriers which were found at the Hans Tauscher business and those which are genuine German military issue. If those leather TM-08 carriers are correct, they were probably made for the commercial market whereas a genuine German military TM-08 carrier was made out of canvas as shown in the image I am providing. I agree with the statements made by George especially the one regarding the difficulty of removing a TM-08 from a leather carrier.
It should also be taken into consideration that it was cheaper and easier to make a canvas carrier for wartime use instead of a leather one.
Albert