I've been reborn with flats on MMs!
I love the bright tone they have for some stuff (mostly punk type stuff that needs to cut through and have that sizzle everyone talks about), but I always put my Labellas back on it and love that tone for most of the work I do!
It cuts back on the brightnes and lets the bass speak wgere it sits best, and that's the mids!
though the Nordy move may not be such a bad idea!
If you do it, feel free to let us know!