There apparently is a script available that will disable the APFS "conversion" from HFS+ during install if you're using an SSD, but that was not available at the time of my install (that I was aware of). You could also upgrade to HS with an HDD and that drive would not get converted to APFS.
For my purposes, I keep a backup system SSD in an external case (which has been HFS+). Just updated the clone with CCC, swapped into the machine and everything was fine. Then a week or so later reformatted the APFS drive HFS+ and cloned system back to it for backup. A few added steps, but nothing that was really difficult to work around.
For my purposes, I keep a backup system SSD in an external case (which has been HFS+). Just updated the clone with CCC, swapped into the machine and everything was fine. Then a week or so later reformatted the APFS drive HFS+ and cloned system back to it for backup. A few added steps, but nothing that was really difficult to work around.