I have BERNINA machines and I use that lock stitch all of the time when I quilt my projects. I push the little button on the display screen; the machine takes two or three stitches in place and then moves forward with the stitching. When I get to the finish end, I push the button again and the end is locked. Sometimes I backstitch-but no more than two stitches. I think it looks quite OK and I don't have to tie knots and pull them inside. I personally like the feature.