I've heard stories about the Ambre somewhat "melting" if left out in the sun for too long. Melt as in it'll become softer and the shape will deform. The Ambre Cabas PM I have in my collection thread is actually shared between my mom and I, but neither of us have used it much. I believe it also comes in a MM and GM size, and also a Neo Cabas.
If you'd like to see more photos of my Cabas PM, let me know and I'll be glad to take some for you