I wanted to run Kickstart 1.3 on my 1200 but still be able to use the HDD. There is a guide for making your own Kickstart 1.3 with the new scsi.device, but the trouble with that is that apparently, you can't soft kick it, so you have to actually burn some ROMs if you want to go down that route.
So I decided to use GetSCSI11
instead to extract the A1200's scsi.device and just make a boot floppy that uses skick to load KS 1.3 and when booting under that mounts the HDD (well, CF card) using a mount list and then moves over all the assigns and executes the Startup-Sequence on the HDD. I originally wanted to do this using a small RAD: drive, but those don't survive the switch between KS 3.1 and KS 1.3.
This works relatively well although the system is not particularly stable, for instance, SysInfo has garbled text and soon crashes.
Tip: delete devs:system-configuration to make sure you get to use the whole screen on a PAL machine when using an NTSC Workbench disk.
If anyone wants further details, let me know.