Added in the v2 NVME module and confirmed working with Samsung 960 Pro (via PCIE expansion card)
Not sure if there are further optimisations, boot times and performance are noticeable faster than my old Raid 0 OCZ Vertex setup, not quite getting the benchmark scores shown in the guide though 
Big thanks to all who contributed to make such an easy to follow and thorough guide!
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Vendor and exact Name of the mainboard/pc/notebook : ASUS RAMPAGE IV GENE
System Type : MB
Chipset and Southbridge of the system : X79
Vendor, Sort and Version of the inserted PCI ROM or EFI module : NvmExpressDxE_2 module GUID 9A4713C2
Success: Yes
optional: Ability to boot (quickly!) from Samsung 960 Pro