I love these! Way better than the Aurelien. Better tongue, better comfort all around. I usually wear a 9-91/2 in my work boots I found the 10 to be right based on shoe flex when walking to leave around 1/8-3/16 of an inch clearance to the front of the shoe.
For reference when I go in for boots I always scale my feet and i “measure” at a touch over a 9. I recommend going up.
I will be buying these in the black/gray colorway as soon as i waer out the Aureliens