It seems that currently using Linux on hardware fakeraid-based platforms is not so simple.

In short, once you know of a little bug in the SiI 31xx controller series everything becomes much easier. Over there is a guide which can help you installing OpenSUSE/Fedora/Ubuntu on the Revodrive X2. The idea is you install everything but the bootloader, and then setup grub manually.

Thanks a bunch, CoolZero.