Yes, I just spent today getting WMR (Windows Mixed Reality) and Steam VR setup.
I can run DCS, (But it's not quite optimized just yet, still getting some flickering) but when I run Aces High III now, it asks me if I want to run my openVR headset, I say yes, it loads Aces High and the desktop shows it running Aces High like normal, but the headset shows its "Waiting" for it to load.
I'm getting closer, but it sure is frustrating!
I have a Reverb, and just tried AH with it last night. Same thing happened to me that happened to Fearless. Clicked "YES" to do I want to run OpenVR headset - game loaded and looked OK on the monitor, but in the headset it said "AcesHigh11" and "Waiting..."
I got it to work by shutting down AH, WMR, and SteamVR. When I restarted AH and answered the headset question again, SteamVR and WMR started by themselves and it looked OK in headset. The first time, I'd had WMR running already when I started the game.
I don't have enough time in it to comment yet, other than "Wow!". Incredible to sit in the cockpit of the A-20 and look out the side window at that big long wing. Sense of scale is incredible, and totally opposite what you get in a 2D flat monitor.
My biggest problem is mouse control- I want to select clipboard menu items with the mouse, but currently the only way to move the cursor is be looking where you want it to be - its like its an extension. Is there a way to get the cursor under mouse control?