Has anyone here tried to do mac OS X UAE, will it mount an Amiga (or MOS for that matter) HDD directly if you stick it on the Mac's native IDE?

I've got a whole ATA connector free on my Quicksilver, the faster of the two, because all my HDDs are on the SATA card instead, which is 133 vs 100. On a very disk intensive OS like X, the faster drive/card really makes a noticeable difference. Mac OS X is a pig compared to MOS! I also wish I could easily stick stuff in RAM like on my Amiga..