Yes, in my preferred workflow, I usually create a temporary commit and then switch away. Sapling also has `sl shelve` as `git stash`.

If you want to run tests on commits without checking them out, you might want to try my `git test` command: https://github.com/arxanas/git-branchless/discussions/643

You can use `sl fold --exact` to combine arbitrary commits without including the current one. (To be honest, I just always used `sl histedit`.)