I don't know anyone with that notion personally and don't care to. I was asking for more of tips on identifying potential problems in leather before my time is wasted on a bad piece of leather, as we all know substandard products can and do come in many disguises, not only shoddy craftsmanship but subpar materials as well, I think a very nice machine sewn stitch would hide low grade thread, for example, easier than handstitched, and would be worse even than an errant stitch done by hand. Thank you for your comment.