@SkyNet: The installer is stable, with only one critical bug found (By me). However, that bug can not possibly occur at all due to the design of the installer (Hence, don't worry. It's stable).
"Multi-installations" are now not only meant for improved cross-model compatibility, but also for inter-(Magicgate) regional compatibility.
Multi-installation performance is also better than the FMCB v1.8B installer, since it uses caching (Well, caching also reduces wear on your memory cards too).