Had an ultra in .45. Like the size and weight, easy for me to conceal with the flat 1911 profile and short grip.
I didn't like mine in .45, recoil made followups quite slow in comparison so my expectations but I bet in 9mm it would be excellent, my lightweight CCO sure was (same frame, longer barrel).
I've had a few Kimbers over the years and all were solid and reliable, despite internet hype, so I'd feel OK there though personally I'd be more inclined to spend a bit more for a Colt Defender or DW ECO. Ruger and S&W make nice officer frame options too.
I personally did not like the micro 9 at all. To small for me to get a good grip on with my hands, recoil was awful jumpy for a 9mm and I found it too big for my pockets and not much of an advantage over the larger officers for belt carry (my common complaints with all the micro 9s out there).