Hayden Harnett "Lorca" or "Mercer"?

What do you want to use the bag for? I find that the Mercer satchel is a great every day bag, while for me the Lorca is more suited for an evening bag, due to the smaller size.
 
Both are wonderful bags but in my mind it would be strictly based on size need. A Mercer can hold it ALL. A Lorca can hold SOME but not all. You really need both...:P

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BPT2532