Proper selvedge jeans

Rinsing is not washing. A pair of unwashed, not rinsed and unsanforized jeans has never touched water. You could go for six months of wear without washing them, getting some great fades and then you wash them and they shrink too much and are too small, or the fades get weird and streaky because excess indigo has run. Also, most people need jean alterations before wearing them - especially when a lot of pairs of Japanese jeans come with a 36" leg length.

A warm rinse not only will remove excess dye, preventing it from streaking in the future, but it will also remove any potential shrinkage prior to alterations. This means when you have them hemmed to 29", (in my case) they're gonna stay that way and not loose an inch after washing them, rendering them unwearable. Whether or not a pair of jeans needs to be rinsed prior to wear depends entirely on how they come out of the factory and whether or not they already fit you. Horses for courses. A blanket 'do not wash' rule is stupid.