Okinawas (afaik) have sweet sorghum woven into them, which will cause them to be significantly hairier, and hence the little white slubs you are referring to, MC#4. Both are really great fabrics. BTW, OP: those jeans fit you really well. coldrice, a tailor should have no problem with hemming / modifying these jeans as they would any other pair of trousers. They wouldn't be able to match the sewing because they don't have the same machinery, but as far as tapering and such goes, it wouldn't be noticeable from the outside. I wouldn't rely on time required as a factor regarding the work input required when tailoring/hemming.. I don't think PBJ has any higher amount of work in hemming their jeans as Nordstrom does. After all, Nordstrom takes a week or longer to hem a pair of jeans with a simple lockstitch!