Hi,
owning the KP I have to say the RAW quality and also noise characteristics of the sensor are quite convincing.
German magazine Colorfoto compared it to 11 other cameras. They performed several tests with different settings in LR with RAW-images.
In the end they provide a final so called RAW-score (summary):
Canon 6D Mark II -> 81,5
Canon EOS 77D -> 69
Nikon D7500 -> 81
Nikon D850 -> 106,5
Panasonic Lumix GH5 -> 77
Fujifilm X-T20 -> 73
Leica TL2 -> 63,5
Pentax KP -> 82
Sony Alpha 9 -> 90,5
It seems to be at the top of it's APS-C peers and even besting the 6D MII.
Most of this scores relate quite well to DXO-Mark scores. Curious if they will ever test it.
However, regardless of tests and scores it will still take the excellent images it does, but I just wanted to point out some quantitative data, that seems to support the overall high regarded qualitative impressions.
here a link to the full pdf:
COLORFOTO
Cheers