Posting here in case anyone else finds it useful.
https://github.com/pixel-ninja/HuskStandaloneSubmitter [github.com]
Supports:
- Submitting RenderPass based jobs
- GPU affinity
- Input/output file handling (by overriding the embedded productnames with Deadline mapped paths)
- Alter settings post-submission in the Monitor
Submission is via the Monitor or terminal. I had planned to write a little integration script to allow submitting from inside Houdini but never got around to it; because for my workflow I've never really needed it. I just write the USD files I want to render and then submit them in the Monitor or from the terminal.