How much difficult is the Mil/Moa set up? Would it make a big difference if the range is known such as a range? This won't be used for hunting just bench rest range.
For an hour or so at the range on a lazy Sunday afternoon, just banging away at bullseyes at the known range of 100yds, it doesn't matter.
However, if you're going to practice (or in competitions need to use) range estimations and/or hold-overs, a 'Mil is a Mil,' as they say.
The Mil/MOA hybrid optics require you to 'translate' the Mils (the measurement unit(s) you see on the reticle) into MOA 'clicks' on the dails - for dialing up or down, left or right. That's especially important as the ranges increases - 400yds, 600yds, and further out.
The Mil/Mil optics simplify 'range est' into either a quick holder-over shot, or
if you have time to dail up/down, then no translation is needed between different units of measurements. What you 'see' in Mils is what you dial. Again, a Mil is a Mil.
Sunday afternoon 'snipers' who don't know any better, and the deer-camp Fuddley-types who don't really care, will just point and shoot, ... and at longer distances they'll miss.
Again, for what might be called 'simple plinking' at 100-yds, the Mil/Mil versus Mil/MOA difference doesn't matter.
For serious shooters, to include real-world military snipers laying it on the line in bad places, it does.