I have an oak cookie bays. The leather is soft matte and does feel a lot softer and thicker than the regular oak bays. As it's softer, it does tend to slouch more and there were wrinkles in places when it arrived. I do like a more structured bag but I love the whole cookie look, so I have used the help of base liners and bag organisers to try to keep my cookie bays as structured as possible. I'm not using her at the moment, so she is stored away completely stuffed to the brim with tissue paper.
I wasn't too keen on oak either, but I thought the cookie design on the bays looks better on the oak and the pebbled beige, than the black. The oak on the cookie is slightly more deeper and has a more orangey undertone than the regular oak bays and I preferred this.
I have a pebbled beige cookie lily that I haven't used yet, so I can't really comment on how it holds up but being smaller than the bays, it will probably be a lot more resilient.
I've noticed the number of pebbled beige cookies turning up on ebay too - hadn't noticed marks but will have to have another look now!
Hope that helps, Mulberrygal!