"Get a Load of this!" How to make a loading screen w/ - July 19th - Live from Epic HQ

How do I bypass or modify the Steam VR ‘white room’ to create a custom loading screen for my Vive game? I have tried to access the setskyboxoverride function from OpenVR on 4.11 but it doesn’t seem to be available in 4.11, or at least it isn’t a function in the header file. And if the function just isn’t available, what is the best possible alternative to overriding SteamVR’s loading screen greybox for 4.11?

Thanks. Any guidance much appreciated!