Hello
Apologies for no replies to your questions.
As a G2 user myself (besides other HMD’s), Windows mixed reality is a bit of hit and miss depending on what your are trying to do. The best option to get your G2 working properly is to enable the HP for Reverb G2 plugin which will then auto enable OpenXR plugin when you have UE5 running. As long as your G2 is properly working with your computer is will work out of the box with these enabled. You may still need to configure your controllers (the way you want) in the input section but they should work fine in the VR template provided in UE5. Working with OpenXR will probably be the easiest way to get the G2 running with UE5. There shouldn’t be anything different working with OpenXR from working with the native mixed reality plugin other than everything will work much better and smoother.
One thing to note, upon running the VR template in UE5, and your G2 is running fine…just delete the items your don’t need in the open project VR template that is running and carry on with your VR apps as needed. Leaving everything as is is also fine to save any confusion.
The other option is to have the G2 work through SteamVR, but that takes a lot more effort…especially with the controllers.
A brief answer your questions:
1 = yes, but you need SteamVR also configured
2 = yes totally possible, but a bit of research will be needed to configure controllers
3 = yes, Google will definitley provide many. Youtube also. A search on this forum will also provide some great info.
Cheers!!!