This gets so old,
Who cares if your dope is in yards or meters, mils does not mean you use meters.
if your dope for 500 yards is 3.2 mils and your dope for 500 meters is 3.6 mils what difference does it make what you dial on the scope ? It doesn't care.
Mils works with anything, yards, meters, miles, it works the same... using a mil based scope on a yard built range is irrelevant, your dope is your dope, the distance works regardless of the unit of measurement. It doesn't work easier, there is no conversion, that is blatantly false.
Any piece of software will give you it in either. They say the exact same thing only with a different number, because the distance is different.
I can call 500 meters, 10 Lowlights and if my dope for 500m is 3.6 mils and my dope for 10 Lowlights is 3.6 mils who cares, as long I know what 10 Lowlight's equal.
Who ever created this confusion need to hung from the Tower of London.