I havn't handled Drew's lamb specifically, but when I have seen lamb from other manufacturers it seemed like it was a lot 'squishier,' almost like it was padded inside. So, I suppose it definitely is softer, but you can cause abrasions with your fingernail even...
As others have repeatedly mentioned, TOJ's lamb is completely unlike most designer lamb; I was surprised by how thick and sturdy it was when I got it, based on my previous experiences with lamb leather. It's too heavy to wear in the summer, in fact, and I'm definitely not going to be causing any abrasions in it with my fingernails. So please refrain from commenting on product you have no experience with. That said, even if it was as thin and light as most designer lamb, are you really going to tell someone they're wrong if they prefer a lighter, drapier jacket, or one that could actually be worn in warmer weather? Is it that unthinkable that someone else might have different values or be looking for different qualities in their clothing than you? I get that you really like the calf, it's just the presumptuousness of "why would anyone ever want lamb" that gets to me. I mean, I really like the lamb, but I don't pretend to know what's best for everyone.