I’m pretty sure I want a WOC in “caviar” which I thought is caviar (grained) calfskin. I know I don’t want smooth “lambskin”. But I was able to locate a WOC in a leather called “caviar lambskin”. I don’t plan to baby the WOC, should I pass on this or is caviar lambskin as durable as caviar calfskin? Please help! Planning to purchase tomorrow.