Just to clarify I have the KH Street saddle, the KH Slim has a bit less padding. I also don’t often ride further than 5 miles without getting off. That said, I’ve found the KH street to work pretty well for me. I have a Freeride saddle on my muni and the extra padding in the Freeride can cause more chaffing over a distance. Though in general this isn’t as much of an issue for muni as you get more frequent breaks due to UPDs.
I’m considering an attempt to flatten the base of the street saddle on my KH36 but will attempt it with an older Velo based Coker saddle first.