So I just had a call from Dr Z a minute ago, I spoke to him about the ZSO, he said he has his own method of the cut which no one else does, which provides more projection. I tried to get him to send me a diagram of it but he said he doesn't want to give out any details about it yet as he's in the process of getting it published, so he doesn't want any other surgeon stealing his method. He did say that he can get 10mm of projection and advised that 10mm is a lot anyway. He said using his method he can get the projection high up to show the shadow under the cheekbone.