I do have it, I am liking it but want to reserve final judgement and review until I get it to Jack and back with the upgrades (enhanced low end circuitry, boost only bass control). So, what I say isn't my final word on the subject:
It has the same great clarity of a Demeter but it's not as hifi brittle sounding to me. The bass boost knob doesn't seem to give that much low end boost, but the 'deep' boost kicks in some nice booty. With that you can get a sound that's fat and crisp, but not sterile. But I'm definitely looking forward to getting it with the enhancements - which will all be in the first production models (mine is pre production model no #1).
I did experience a bit of a clarity overload playing my MTD through the Read preamp into my EA CXL-112L cab.
As to Kern vs Read, they're not that similar at all. The Kern is very thick in the mids, it's hard to get rid of them. The Read has a very even response by default, but the midrange emphasis knob can give some great mid boosts for cutting through etc. The Kern has the passive interactive eq ala Alembic, the Read has active EQ with bass,low mid, high mid,treble.