I dabbled with getting the 44mm concept - but I felt the case lugs were too wide, leaving a sizable strap overhang and spacing beyond the wrist.
So, after trying the Black Panther I was thrilled to see the possibility of a smaller Concept, and immediately put a strong interest for any "smaller cased" Concept. Et voila, the release came and I am stoked!
See below for some relative comparisons...

Cheers
Peter