FWIW - I had a chance to shoot this rifle during my last trip to Houston. It was ok and didn't really stand out to me - the biggest advantage over a comblock rifle being the uninterrupted top rail. Also, the stamped metal lower feels very cheap in person.
Edit: The one thing that was interesting is that we had to keep letting the barrel cool after each magazine as it heated up really quick and was then getting erratic. The hot texas sun may have had something to do with the overheating, but now, on reflection, I find it odd that the ARs and the SCAR were fine.
top rail is definitely attractive, besides mags and caliber
but the barrel over-hitting is of great concern, for sure