If you'll accept general impressions of the SIG P938, I'll say that for a "1911 guy" looking for a very light, compact pistol with familiar manual of arms, it's an excellent design.
My only real complaint is that the design places an overabundance of importance on the ability to rack the slide with the safety engaged.
It's a feature, being a 1911 guy, that I don't expect and don't appreciate, but it renders the manual safety harder to reach and less positive in its function.
The rack-on-safe feature works only when the hammer is already cocked, so it's not like you can insert a mag, engage the safety, rack the slide, and save a step compared to other single action pistols.
You have to rack the slide or cock the hammer first, then engage the safety, then rack the slide again, to load.
While the Kimber and SIG are not mechanically identical, primarily the difference in the extractor design, so you can't expect the two guns to run identically, I ran 1000 rounds of handloads without issue, 50-100 rounds at a time, was absolutely overjoyed with the performance, then had three failures - two "why isn't hammer dropping?" and one failure to extract - in the span of 50 rounds. A subsequent 100 trouble-free rounds hasn't completely restored my confidence.
I prefer the Kimber's more 1911ish appearance to the SIG family, but not a big deal, either way.
I chose the SIG over the Kimber because all models of the former have ambi safeties, while only some Micro 9s do, and I didn't want to budget for adding an ambi to a Kimber.