I have this duffle in bv with studs and its been fine for me. The original legacy duffle was too plain for my taste but the studs have so far worked great for me. No issues here and I dont worry much because coach stands by their products if any quality issues would rise im sure they would fix it. Knock on wood I havent had too in the 2 years I started my collection.
I've had mine since the end of September and have been carrying it non-stop since (minus one week of vacation). I got the black specifically because of the studs--they are an antique brass and so not as bright as the brass / gold studs might be. The bag has softened greatly and I have had no issues with the bag whatsoever. I love the look of the studs--just a bit edgier than a plain duffel without being too much. I agree with the earlier post that I don't worry about the studs--I know that Coach would stand behind this bag. Hope this helps.