For what it is worth, I have a 30 cm birkin in the old blue jean and have been shocked at how versatile and easy it is to wear. I always get stopped and asked about my bag and get compliments- even while at Hermes. To me, the new blue jean has a bit more grey to it which makes it even more neutral in my eyes. It is absolutely gorgeous in person! I personally would jump at the opportunity if I did not already have a blue jean bag, but this is totally subjective. Go see it in person to make up your mind and if you don't love it, don't be afraid to pass.