I haven't been up close and personal to any partner cookware, but it looks like welded plate material that has then been annodized... Maybe it has a textured finish kind of like cast or maybe it's smooth...???
Either way, if we (you) can't talk him into making one to your liking, why not go elsewhere? I mean, I'm sure James would be happy to tig weld up some shit and get it to you all next year sometime... or you could have a reliable local welder piece some stuff together to your liking and have it anodized. I believe you can get an egg shell like finish with acid or bead blasting?? maybe? but my anodized AL cookware at home (just went to the dark side after 20 years of dedicated cast iron use) is pretty damn smooth.
My point is the folks at Partner are not the only folks to magically join metal and then oxidize it's outer layers. Maybe we (that is the you, as in someone else, of we) should think of looking elsewhere? Si? No?
Yesterday's gone on down the river and you can't get it back. - Agustus McCrae