Always learning something new in this hobby.
While less expensive scope manufacturers provide MOA - Mil combination scopes, Vortex is interesting in that they allow you to pick the reticle (MOA or MRAD) then ensure the turrets match, or the other way round. Consider this scope:
http://vortexoptics.com/product/razor-hd-gen-2-45-27x56-riflescope-with-ebr-1c-mrad-reticle/reticle If you choose one of the two MRAD reticles, then click on the specifications tab, you'll see that the turrets are .1 MRAD.
Now, click on the MOA reticle in the middle. Click back on the specifications tab, and the turrets change to MOA.
Perhaps that's why I couldn't find any "Mixed" scopes on the Vortex site. They don't sell any. Granted this scope is $3,400, but this one does the same thing (It's only $1200):
http://vortexoptics.com/product/vortex-viper-pst-6-24x50-ffp-riflescope-with-ebr-1-mrad-reticle/reticle I guess the higher end makers are in tune with the better way to sell a scope. Either MOA-MOA or MIL-MIL, never mixing the two on the same scope.
It's more expensive to offer the same scope in full MOA or full MIL, but sure makes more sense.
I suspect this practice will trickle down to the less expensive makers over the next few years, but for now, it seems to be a high end practice.
On the other hand, Hawke (this is a paltry $1000 scope)
http://www.hawkeoptics.com/sidewinder-ed-10-50x60-tmx.html comes with a Mil reticle, but MOA turrets. For a paltry $100 you can purchase replacement Mil turrets if you get the TMX reticle. That thing is complex, using both MOA and MIL in the same reticle if I read it correctly.