I have the small, black with distressed ruthenium and I love its characteristics with one caveat (maybe two).
Pros: easy to carry, pliable lambskin, top handle (duh), separate compartments, leather lining, the plate on top is appealing (and not too in your face when worn) and not prone to scratches (handle protects it in a way), lightweight (unless heavily filled like any bag), can be worn cross body if you have slim/short frame.
Cons: when worn on my shoulder, I can't close the flap easily with one hand, and the bottom is susceptible to wear due to no feet, looks bulky if super filled.
With that said, it's one I will keep in my collection forever, in fact I'm thinking of another, such as the denim
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Good luck in deciding, it's not for everyone