Your mileage may vary, because the workflow you described does not suit me. I rarely want to put on hold my commit, work on a new one, then go back later to the former commit.

Most of the time, when working on a new commit I have a few changes related to recent commits. So _when I'm done with all that_, I commit selectively the new work, then dispatch the rest among the other commits:

  git add -p ; git commit
  git add -u ; git absorb