I've only heard the Clear briefly, like a few hours.
Multisampling from trusted ears with similar tastes to mine, the clear is slightly more resolving - and more open, as the mesh around the driver is basically just to prevent physical entry, so it's nearly an open baffle to the Auteur's 80% open. You can see through it.
It also has the same technical forwardness that made me skip on the Utopia: they're exceptional cans, but they feel like they grab you by the ears and shout "BEHOLD MY DETAIL RETRIEVAL, MORTAL, AND KNOW DESPAIR!". It's never fake detail like an HE560, but it also shoves it right in your face.
I think I could have gotten used to that - it really is an exceptional can - except for 2 points:
1) The headband just isn't comfortable. It's 2018, there's no excuse to not have a suspension design for a headphone that heavy. And they are heavy, as it's a whole lot of metal. It felt like wearing an older Audeze or HiFiMan. Alright, not quite that bad, but there was a well defined hotspot.
2) 200$ for replacement pads. 800$ for a headband. The cushion in the headband? You can't get that separately (as far as I can tell). For a sweaty Italian with greasy Italian hair like yours truly that's a 1000$ bi-yearly maintenance bill, at least. That kind of money is insulting to me.
YMMV, if you're not an enormous wood person (I am) try to audition both.