ribera... summer bag?

I agree with everyone else- Damier can be worn year-round. I love the Ribera, but like photoobsessive I recommend the Duomo- if I were to choose a hand-held Damier that would be my first choice.
 
As everyone has said - its your bag wear it when you want. I carry my damier pap all year long. Although it probably gets more use in the winter becuase it's my go to rain bag. The mini ribera is so small though - I also suggest stepping into the Doumo - that's a bag I would lust for!