I forgot about this thread!
I actually ended up getting one. Here is the review I posted on ar15.com with pics.
Got the scope today. While I was pulling it out of the box, my first though was, "dammit, they shipped me the wrong one", because it was still heavier than sh*t. Upon further review, it was, indeed the correct model. I got it home and weighs 15.5 ounces, with the ring installed. Overall, it feels like less than a one ounce weight reduction- the old one is listed at 16 ounces. I bet they rounded DOWN from 16.8 ounces to get to that figure, though. You can still see the mounting holes for where the old mount would have gone, although they are very small. All the folks at Valdada did was remove a rail and change the mount. I was also concerned that one ring wasn't enough to hold up the scope. It is VERY sturdy.
I picked up an ACOG today and at first I thought the IOR Valdada was VERY blurry in comparison. Unfortunately, I neglected to realize that the Valdada was out of focus. After focusing it, I can honestly say that the glass is among the finest I have ever seen. The reticle is crystal clear. I tried taking a picture but wasn't very good at getting the full sight picture. About half of the full picture is missing. The ACOG in a Larue mount weights 14.2 ounces, 1.3 ounces lighter than the Valdada.
It sits VERY low, although that can be adjusted with a different ring. At certain angles, the front BUIS while flipped DOWN is visible in the very bottom of the sight picture. If it bothers me, I can switch out the rings.
Overall, I am very pleased with the purchase and plan on selling the ACOG. I thought it would be the other way around. I prefer the CQB reticle and like having focus and adjustment knobs. I also like that it sits a bit lower than the older version. I just wish IOR hadn't tried passing this off as a "lightweight" version, because it is pure bullsh*t.
Old version for comparison