Just wondering if someone could explain if this is a critical part of a quality shoe. I have read there might be some advantage to a machine welt. Is that true?
In my opinion hand-stitched welts look prettier and the uppers have more of an artisanal look because of the small ripples that form near the welt from the hand-sewing and punching. I've noticed that hand-stitched shoes become more pliable and comfortable with wear. But, that might be the combined result of other factors like insole and sole materials. In conclusion, you can argue it all comes down to the aesthetics.
Also, the soles can be shaped into more organic forms not achievable with machine welting, e.g. an exreme rounded, narrow "London" waist very close to the uppers. This is purely aesthetic, unless you consider the few grams saved by the narrower waist make any difference.
Thank you.