I was in Amsterdam too. You can actually see me in the video Pimax posted, wiggling my head up and down wildly (I noticed no ghosting, if you care). Of course I only got the 5-10 minute Fruit Ninja demo which is a terribly small sample size, so you need to factor that in with what I am about to say.
I would have said it in more moderate language than SweViver uses, but the convergence issue was the only negative point I experienced, and it provided substantial improvements in several areas, be it sweetspot, sharpness/detail, SDE, FoV, Godrays. The recent videos suggest that the new lenses will offer less improvement for the sweetspot, and it will be 80Hz (which I actually did not notice even in more active moments, so I am almost confident that it will not be a big deal to me).
However, I would be very happy with the other major improvements I mentioned as they are about the primary attributes of a next gen HMD, not just secondary stuff.
I remember myself thinking that I even would probably be fine with exactly that V2, if this was what they would be shipping, assuming that you can get used to the convergence issue, and still would find the overall package to be a significant improvement over Rift and Vive.
It seems we can conclude that the 8K V2 may not have been comfortable for some backers due to certain individual conditions they have (out of range IPD, sensitivity to certain optical effects, etc.), while it seemed pretty much almost there for a number of others.
I for my part will be very happy to receive it, but obviously nevertheless hope that they can iron out all remaining issues for at least 90-95% of the potential users.
EDIT: So this means it makes all sense in the world to have mixed bag of reviewers, ideally from different ethnical background, test the 8K. They will have different inidvidual but also ethnical conditions. E.g. flat nose of Asians compared to long noses of Europeans, etc. etc.. So if only Chinese beta testers wear the 8K, nobody might notice that many of us Europeans, etc. might have issues with the fitting around the nose, just to name an example.
And I would also like to see a mix of more enthousiastic, user-level testers like SweViver, Sebastian, VoodooDE, and the more critical, professional views of the Ben's & Co.. Ben might end up being too critical with all his knowledge, so I want to understand what an average Joe experiences in simple day2day use, but of course Joe might not spot points which are actually important after weeks and months of use.