Sorry, yes, we probably are at cross purposes. My jaw was dropping at the procedural lace - I assume that it is procedural, knowing BB - and I also assume that was what everyone else was raving about. If it's commonplace stuff then I'm only slightly deflated.

The way that opacity varies with angle should be more complex with lace, because of its construction. I expect the "thick bits" to interact with lighting in a different way to the "thin bits" (don't know the proper lace terminology, I' m sure there is one), and I'm anticipating that BB will have addressed that aspect too.

We'll just have to wait and see. I'm sure the wait will be worthwhile.