I have purchased leather loincloths from Ebay ... a few were used in films and were from the Western Costume Company. There is a seller who I have a link for under the marketplace section of the site called Debbie's Leather who makes leather loincloths. (I guess the Indian Trading Company is no longer so I'll have to remove the link.)
One thing you can do is connect two smaller sections of leather (the front and back flaps) with a brown fabric thong sewn to the inside top of each flap to connect them so as the loincloth can be worn over a belt or tied at the waist. This is how most of the Western Costume Company loincloths were made and they were comfortable and felt authentic.
Hope some other loincloth fans respond with some suggestions and thanks for being supportive of the site.
When buying leather to make a loincloth, do not get cowhide, its too thick. The best is lambskin or deerskin, but make sure its not too thin, it will tear apart.
Thanks so much for your replies and guidance. I have a found a vendor that sells reasonably priced leathers in my budget but it has left me with a couple of other questions for you.
Does anyone have any experience with pig suede? How does the texture feel for loincloth use and how does it hang?
This vendor also sells lambskins which I have seen recommended, however in the pictures it looks a little shiny (for want of a better phrase). Is this the case with lambskin or just something in the pictures?
All the hides (suede and lamb) are listed at approx 0.6mm-0.7mm thickness - is this suitable? And from your experience what kind of square footage is best? I'd really like to have the loincloth be one long strip going between the legs and held by a waistband but I appreciate this could result in a long piece being needed.
I hope everyone is staying safe and healthy amidst this global health crisis and thanks again for your help.