I also have the Keyboardio Atreus which I love.
I learned Colemak-DH on the side, practicing a little bit every day, until I got to about 40% my QWERTY speed. I had a Ferris Sweep split keyboard that I set up next to my QWERTY keyboard at work, and started using that more regularly. I soon switched to a split Corne full time before getting the Keyboardio Atreus, both of which are configured with the Colemak-DH layout.
This recent 62 key variant of the Atreus is an experiment to see how I feel about having a row of numbers.
Interesting!
Another row could be useful, but I thought the default layout of the keyboardio Atreus was clever because the second layer put the number keys right under the right hand so it worked like a number pad. Another row for numbers would be useful for gaming though.