I hope your quest for a digital camera taking your Pentax screw-mount lenses is making progress.
While I still prefer to use film my work pretty much necessitates digital nowadays, and I use the Olympus OM-D E-M1, not only for its ruggedness, but the digital file generated by the Olympus image processor is particularly suited for halftone printing.
I also have purchased adapters for using my existing lenses on this, and in some cases the results are rather good. However, my issue is that the much smaller image format - in this case, 110-equivalence compared to 24mm X 36mm) means severe cropping of my images: in other words, my angle of view becomes much narrower.
A lot can be said about the mirrorless Sony Alpha 7-series, which has the advantage of a thin camera body for easy accommodation of non-original lenses, and also a 24mm X 36mm sensor so the 35mm SLR lenses would work at their full capacity. They aren't exactly cheap but prices are steadily dropping, and they might be worth a look.