It sounds like the closest thing to what you want is the Xreal Air, not the Simula One, which is a project for a full high-quality standalone VR headset (that happens to run Linux instead of Android like other standalones).
> VR instead of AR is a dealbreaker for me though
The problem with AR is a basic technical one: you can't use a transparent lens to paint black pixels over white light. That's why Apple, despite being desperate to make the "Apple Glasses", has basically abandoned AR entirely in favor of VR-but-the-video-passthrough-is-so-good-it-feels-like-AR design, and I would expect most other companies working on AR devices to follow suit.
My Air turned up today. The "can't paint black with light on a transparent surface" solution is a sheet of plastic. Put it on when it matters, take it off if it doesn't... Can't fault it for simplicity.
VR instead of AR is a dealbreaker for me though- I want AR virtual monitors that overlay the displays on my actual vision. Even VR which uses a camera to pass through to the display isn't really what I want.
My ideal hardware would just be a "dumb" AR display with wide FOV and an HDMI input that just overlays the video data onto my normal vision.
From what I understand a big challenge is the wide FOV though, but I don't know enough about optics to really understand why this is the case.