If you check out this thread on the different leathers used by Mulberry it may help answer some of your questions:
I've had both (I think)
Soft spongey daria - prone to wrinkling, durable, weatherproof, lightweight, no leather smell, quite shiny, true black, no structure at all
Spongey pebbled mitzy - smelt of leather, dull grey although was actually black, head wearing, some soft structure although softens with use, quite thick, almost bomb proof
Hope that helps
Thanks MiniMabel, Louliu71 and jp23. It seems that spongy pebbled could be quite different from soft spongy
You could try mailing M customer services? I had spongy leather on a daria hobo which was absolutely bullet proof, and looked like new even after a couple of years of regular use, but I can't remember the exact name for it I'm sorry.
Got reply from Mulberry:
"Both leathers have a pebbled effect, however, the soft spongy has much more of a shine. The spongy pebbled probably has a more consistent level of pebble.
Both Collonil Leather Spray and Gel can be used on both the above leathers as per the instructions on the care card provided.
We do hope this information helps and please do not hesitate to contact us if you have any further questions."
This doesn't give me much. Oh well.
Warning - Ellie is going to be brutally honest here............
SSL is basically a split leather (the hide thickness split) - basically its the equivalent of veneer rather than solid wood.
The process of tanning desiccates leather, the thinner the hide the greater the risk of drying out which invariably leads to splitting, cracking, peeling. No amount of polish/moisure from above will resolve this because it is the hide surface moving off the thinner membrane.
Im sorry to be blunt but to say I am not a fan of this leather is an understatement.
The question is whether spongy pebbled is a split leather also.