Final Version 3.0! This workflow is meticulously fine tuned to accommodate LORA and Controlnet inputs, and demonstrates interactions with embeddings as well. It is highly recommended to use a 2x upscaler in the Refiner stage, as 4x will slow the refiner to a crawl on most systems, for no significant benefit (in my opinion). Also, use caution with the interactions between LORA, Controlnet, and embeddings with corresponding weights, as horrors may ensue. You have been warned ;)

Now you can run 1.x models through the SDXL refiner, for whatever that's worth! Use Loras, TIs, etc, in the style of SDXL, and see what more you can do. Let me know if this is at all interesting or useful!