For those of you that have the Turner, I am just wondering, if after wear it stays as stiff as the first time you got it, or if it loosens up a little bit. I have it sitting on my table and I love how it sits up and keeps it shape. Does it continue to keep its shape after wear? Just trying to compare it to the Marley which seems very slouchy, where this one seems stiff. I am hoping it keeps shape, but I wanted to see before I started wearing it, what to expect. I love my Marley, don't get me wrong, but it doesn't make sense to have 2 slouchy bags, for me anyway. TIA