Miriam will correct me if I'm speaking out of turn, but typically when you sew on leather you want the stitch length longer than most other sewing projects. It's kind of hard to see yours, but I'd say even longer than your stitch length pictured. So, I understand what she's saying about people not wanting this particular model for leather. I'm taking a leather sewing class right now and the teacher says the closer the stitch, the more perforations and it causes the leather to weaken and the seam to weaken. Too close and the leather will actually rip or fall right off at the seam.