OK, so my Reverb has arrived and I've spent about 2 hours using it so far. Coming from using on the Rift CV1 in the past, here are my initial thoughts.
Build quality
Overall very good. I think the head strap could be a bit better though. It feels sturdy enough to me and the materials feel robust.
Comfort
Marginally less comfortable than the Rift CV1, as the head strap doesn't curve to accommodate the ears, which may seem like a minor point but it does have a detrimental effect. That said, once I got stuck in to using the headset I didn't give it much thought and it hasn't been a problem in 2 hours of use.
As someone else has pointed out, the cable is a bit thick and heavy, so it feels cumbersome when you're moving around. But for use in sims that's not really a problem.
SDE
SDE has NOT been completely eliminated but you really have to look for it, to the point where it has a tendency to disappear from view even when I do manage to spot it. It's more noticeable on large plain surfaces but in all honesty it's no longer on my mind in any meaningful way.
Overall visual quality
I think it's a bit of a stretch to describe this as 'near monitor quality' but it's still a really significant improvement on the CV1. What was strange was that at first it barely registered that the graphical fidelity had improved. It just felt very natural to be sat in a cockpit with fully readable gauges and nice clear MFD displays. But once I started to pay attention it became increasingly apparent how much better everything is visually. Looking outside the cockpit I can see much further in much greater detail. Identifying ground and air targets is so much easier also. My gunnery in the A10 improved quite a bit on the first attempt.
So while I do feel the graphical upgrade has been a bit over hyped in places I'm still really happy with it.
FOV
I wouldn't say it's any better than the CV1 to be honest. If you move the headset a bit you will see the edges of the panels but again you have to look for it. It didn't spoil my aerial fun time at all.
Audio
This is a weak point. The sound quality is acceptable, but the earpieces are pretty rubbish. They just don't press comfortably on my ears, no matter what I do to adjust their position. The CV1 did this much better. I think this is caused by the same problem previously mentioned re the shape of the head strap. Because the pivot point of the headphone arms is right next to your ear it has to press in at a steep angle to come into contact with your ears. It's poor design for certain.
The good news is that the earpieces are really easy to remove and so I'll use my much better bluetooth headphones instead.
Performance
I'm running a 1080 ti and the performance at PD of 1.5 was just fine. I did a low flight over Vegas and experience no frame stutter. Likewise on the Caucasus map, it's really been surprisingly smooth. I haven't measured the frame rates yet but I'll do that another time. I haven't tweaked my setting in any way. They're far from being way low though. I've set the PD down to 1.0 and it still looks great while being slippery smooth.
WMR controllers
Meh, pretty rubbish but I never intend to use them anyway.
Tracking
Very good in DCS. No complaints there at all. A bit spotty when you start walking around though. I'm using it in a pretty dark room and overall it's fine for my purposes.
Conclusion
As an early adopter when VR is still very much running at the enthusiast level I'm very happy with the experience overall. It could be slightly more comfortable, and the audio is a let down but I bought this headset simply for the improved resolution in a sim environment and I got exactly what I wanted out of it. Given that this is barely 2nd gen VR I think there's plenty to be optimistic about.