FWIW, I ran a LOMC Ortofon cart (which is very low impedance) into my Monbrison for some time and loved it... then I tried a Blackbird and liked it _much_ better. Yes, a tiny bit of detail missing, but it had none of that funny, tizzy treble you sometimes get with LOMC. And is stellar in every other way, frankly.
And, yes, of course run it into the MM input...
And, yes, of course run it into the MM input...