I have used it and I liked it. What I prefer on the MLR over the MD is the fact that the MLR has .5Milradian hash-marks and it's much easier to break it down to finer graduations compared to the full 1 Milradian marks on just the Mil-Dot ret.
Same for the NP-R1 compared to the NP-R2, the windage marks being spaced at 2MOA in the R1 are easier to break down and make wind holds than the 5MOA spacing in the R2.
I dial elevation and hold for wind when shooting long range, the finer hold points of the MLR (Mil Ret) and the NP-R1 (MOA Ret) are easier to do that with.
Good luck with your scope. You did order the Mil adjustments to match the Mil reticle I hope? That makes life a touch easier when the adjustments match the reticle.