Hi Ian! I'm glad that you're enjoying the content! I love VR and getting to talk about it is so much fun for me! I've also got the GearVR headset too - I think that they're both great devices, and I've been having a blast developing for each of them.
I'm actually running Windows 10 on my Mac, since I need to use a laptop with an HDMI port on it and my Surface only has a mini display port. :)