I can't really recall when mine lost the super silkyness but they're still fairly soft...
I wouldn't worry about the tags. All my diapers, bamboo, cotton or organic cotton, have all lost their tags fairly early on. I think it's because they make the tags fairly soft so they don't irritate baby's skin (since they're on the inside) so this makes them more vulnerable to wear... I think that's why ME makes the different fabrics with different colored stitching and different colored whale tags, so you can tell them apart even when the inside tags fades/falls off.