I use skills for offloading work onto subagents. By configuring the skill to use a specific model it gets enforced at the harness instead of depending on the good will of the orchestrating model to actually delegate. This also saves context.

Today Fable had to fetch a zip file from a web page with a eula prompt, then get at a file in a disk image in the zip.

This is something that will need to happen a lot as part of this project.

I asked Fable for a skill/script combo suitable for Haiku to accomplish the task, and now that task happens at minimal cost during an analysis run.