I've always had a soft spot for bags made of lamb's leather, but my fav designer (Marc Jacobs) never seemed to use it, so I had to get my "fix" elsewhere (Kooba, Botkier). Well, last year MJ finally ventured into lamb leather and some of the bags were just heavenly - this season the quilted stams were lamb and they were oh so soft and smooshy!! I know a lot of people prefer his original calf leather, but give the choice, I'd choose lamb all the time!! They're so much softer not to mention lighter weight. I'm hoping he continues to use it on bags in the future.
the only time I'd have to say I DIDN'T like lamb over some other leather was when Balenciaga switched from chevre (goat) to agneau (lamb). I MUCH prefer the chevre Bbags to the newer ones (I don't know if it has something to do with the way they process the leather to absorb the color and withstand the hardware or what the reason is, but that's one of the few times where I don't think the lamb is as nice and soft)