That looks very interesting, who has experience with them?
I have the Primary Arms 4-14 on my Grendel. It's a decent scope overall, and a really nice scope for the price. I've shot paper out to 700 yards with it and it works fine for that. The glass clarity is actually good, it tracks fine and it returns to zero every time.The parallax adjustment is right on the money at every distance I've tried.
The reticle is a standard mil dot that is very thick at 14 power. Almost too thick. The turrets are not good at all and there is some play between the hash marks while turning the turret knobs.
The only scope I can compare it to is my Viper PST 4-16 FFP. The PA scope is obviously not in the same class, but I have to admit, I can't see the PST being worth $700 more than the PA. If the PA had better turrets and a thinner reticle with mil hashes instead of dots, I wouldn't buy anything else to use on an all-around rifle.
I hope that helps you out.