I don't have the Kristin Studded wallet but have seen it IRL. It is very Nice. The Boysenberry leather is like the handbag - so I think it would eventually flake after some use. (I had the bag and exchanged it for the Black. I was sad because the Boysenberry did start flaking) The Black is made of a different leather - texturized where the Boysenberry is scale like. I understand some people have found them at the outlets. I wish I were so lucky!!
The purple one is more shimmery...while the black one is more subdued! my mom (who is around 48 i believe) picked up the black clutch for me today and she liked it so much that shes going to borrow it for a party!