I recently ordered the APC Geneve bag in noisette/hazelnut/brown and my first impression is that the big is super stiff! I'm having trouble just opening the bag! It's a beautiful smooth leather but I will definitely leave a major crease on the back of the bag at the rate I'm pulling the top back.
I opted for the regular size over the mini because I had read reviews that the mini is too small to accommodate carrying your daily items. It is comfortably sized to fit all my daily items (i.e. phone, wallet, tissues, hand cream, etc.) but as I'm quite petite (5'2"/158cm), the bag feels a little overwhelming for my frame.
I think it's a good casual bag and would be easy to match with most outfits. I had been looking for a brown bag at this price point for some time now so I thought it would be a perfect fit but after actually touching the bag and modeling with it, I may have to reconsider. I do have the option to return it so I'll report back on my final decision haha.