Yeah. The creasing will pretty much stick with use... I've been using all my Caviar Maxi's the crease is just a faint line/wrinkle but not indentations. Its inevitable with use. It doesn't bother me since the quilts remain puffy.
before i purchased my jumbo, my sa told me that the creasing on the bag is inevitable but less apparent on caviar. I use leather conditioner on mine and it hides it/makes it less noticeable. My friend wants to buy one and didn't notice the creasing until I pointed it out to her so maybe you could also use conditioner and see if that helps?