https://civitai.com/articles/14820/flux600-teaching-the-rule-of-3-into-sdxl-epred-models
The civit trained weights.
The entire process and data is available here.
The primary goal is to teach object association through example.
I've seen this work in the past with vpred, but I haven't tried it with epred yet. Civit's trainer is a good catalyst for testing.