Bios saw the 950 straight away, no problems so far, God willing.
476.9GB reported storage when installing Windows 10 pro.
15:55 started the Windows install, PC restarted at 16:01, again restarted at 16:02, at my desktop at 16:05 after a minute of Windows 10 option bumf.
Additionally, I've seen many people across the net complain the 950 is "upside down". Not so for Gene VIII, and I'm assuming all ASUS Z170 board owners, looks fine for us.
The software side of things is gonna take me ages, whole new PC to set up for the 1st time in years, but hey the 950 looks good and Windows 10 installed and working just fine.