^^ exactly. What's the worst that can happen? You get it, you decide you don't like it as much as you thought, so you return it and get your money back.
I'm very new to the forum but I'm gonna give you my opinion anyway.
I just bought the Mia Satchel (in black), and I love it! It's the perfect size, and I don't have any problems with it staying on my shoulder, even wearing a winter coat. I say go for it!