Would be no prob to wear a 3970 with jeans(wish i have one ,i mean the watch
however some ppl just can t cross their mind barriers and stick to the etiquette,dress watch w formal wear,sports watch with casuals so i agree with you might be that cause the lower demand for the so called classic watches (intentionally not using the word dress watches since a 5170 or 5270 not a dress watch for me).An other factor could be the technical versatility a Nauti(rotfl)could be worn in the office in the park or on the beach a classic piece hardly ,BUT i really warn manufacturers to try mix all the features in one since that will result such pieces as the 1159 or the VC56.