I'm with Heiroglyph on this one. It was definitely a workaround. While it seems nice to be able to change kickstarts that easily, the compromise is that you're left with a beta-quality core system on the A3000 1.4 ROMs (exec v36). That means pre-2.x levels of compatibility with accelerators and zorro cards, which limits you in different ways.
(From a technical standpoint, the way the A3000 SuperKickstart ROMs work is that they look for the file Devs:Kickstart on a partition called WB_2.x: or WB_1.3:. You need both partitions on your hard drive to be able to switch between them from the early boot menu; you can also choose either from floppy if you prefer)
