Carmelita, I think you are onto something design-wise. I love how it looks with the flaps tucked in and tied!
When the "flaps are out" it looks huge, like a very expensive beach tote. However, can you imagine trying to get sand out of that tightly woven leather? Egads, I wouldn't risk it. And it's so 'open' otherwise I'd be worried someone would reach in and swipe somthing (but that's me, I have to commute daily on the L and deal with airport security almost weekly). So as I'm thinking about that bag, I would skip it...except when the sides are tucked/tied, because then it is super cute!
If you absolutely love woven, then go for the smaller Perry. Otherwise, just enjoy your Dylan Medium Tote for a month and see what else you like. I am clearly not advocating for you to keep it because it was a deal, or to exchange and pay more than you wanted to spend. If you don't love it and find it functional, will you carry it?