Ya know, it's hard to tell from the Diabronet photos -- plus, if you're buying a bag from them, you're not going to get the actually bag that's in the picture. That's just a staged photo with a representative bag. And the leather/shine level do vary from bag to bag, so one 06 Truffle is different from another 06 Truffle. That's one of the elements that gives each bag its personality.
If you work with a store like BalNY, they will send you photos of the actual bags they have so you can see which leather/shine level you like. You could try to do the same with Diabro, through their customer service.