I've got a S&W 640 Pro, which is a closer comparison to a Kimber K6S, with overlapping street/Gunbroker prices (depending on the K6S model, of which there are now several).
Both have the enclosed/hidden hammer; both have stainless steel frames.
The Model 640 Pro might be compared to a new Model 60 with the same size .357/.38 frame size. The Model 640 Pro does have some extra features which one can read about here:
Performance Center(R) Pro Series(R) Model 640 | Smith & Wesson
I bought my 640 Pro prior to the Kimber K6S existing. Perhaps, if both were available at the same time, I'd also have a hard time deciding between those two. What would sway me toward the S&W 640 Pro is:
-the model has been on the market for whatever time longer than the Kimber K6S.
-to me, the Kimber K6S is still unproven, as I've not read of anyone even putting 1,000 rounds through one, if not more.
-I've got 4,400 rounds through my 640 Pro and I'm very happy with this revolver. I have read of one fellow with some amount of problems with his, but don't remember if it was in this forum or somewhere else.
-I've had three Kimber 1911 handguns and each had a small problem, sometimes needing to go back or getting it repaired elsewhere. Understood, a 1911 is a completely different platform, however, that's Kimber's main product-line. I've got no history as to what might need work on a K6S and how Kimber will handle such a situation.
-five vs. six rounds is not a big deal to me, but then again, I usually carry one of my double-stack Glocks with 10+1 to 17+1 total ammo capacities.
If the OP really wants an exposed, cockable, smaller .357/.38, then the Kimber K6S is not comparable.