So I heard back from my email to Kirk Enterprises and they say they will have a custom plate for the K-1 in a few weeks. No indication if it will have a strap lug.
In the meantime I got the
Breakthrough Photography plate recommended by @Todd. I was a little concerned by his comment that it was expensive but I was surprised that the cost is actually (IMHO) quite low compared to custom plates.
Anyway I took off the lip as @Todd shows above so I could get the strap lug on the left as I need, but then decided to try the plate with the lip to the front. This does actually work and there is no interference with the screen this way. I did put a layer of gaffers tape on the lip to keep it from scratching the camera body, but I do that on all my plates anyway.
Probably not as nice as a custom plate designed for the k-1 but it works just fine for me.