I recently saw the crystal version in person for the first time and it's absolutely stunning. I am hoping to get a Dionysus GG Chain Wallet but they only come in the "plain" hardware. I think the crystal version would totally be great styled for day/casual or more formally depending on the rest of your look.

And I love the blue enamel Dionysus hw too. Personally I think this would suit my style(s) up or down better, but the crystals are like gems. My SA often says that some Gucci bags are better worn as you wear jewellery.