I've got one mounted on my 14.5" LMT...
As stated in the ar15 revue, it's quite a hunk of glass and metal, but having done some work at the range mixing close in ( 10 to 35M.) at 1X, followed up by switching to the 4X engaging targets at 100M, I was quite happy with the optics, FOV and clarity.
The return to zero seemed quite good after removal/replacement several times.
No real comlaints, and it seems to address the shortcomings of an Elcan or
Aimpoint as well as a fixed optic like an ACOG...
Having said that, I am trialling an ACOG TA31RCO, current Marine Corp issue, on my other 14.5" LMT (don't ask!

) and once you get into using the recommended Binden (both eyes open for close targets) method of use, it's OK.
I plan on keeping both, as well as my various Eotechs and Aimpoints, as, short of a S&B Short Dot, I'm not sure the 'do everthing well' battle optic exists.