After sitting in my wishlist for almost year, I finally picked up the K-1. Decided to pair it with the DFA 50mm 1.4 (which is, quite possibly, one of the heaviest non telephoto primes I have handled).
There was a slight temptation to further expand with Nikon FX (to compliment my D500), but after comparing the DNGs to some of the sample files of the D750/D810/D850, I decided that the K-1ii was the best choice for me for Portraits/Landscape/Stills. The glass commitment I have to Nikon is all in telephoto, so running two systems should be totally fine and not create too much conflict.
Waiting for the battery to charge to update the firmware. Should be a great weekend with this new sidekick/brick by my side.