Your ROM collections will work but the emulators themselves will not. The Wiz is still young yet, so not everything has been ported. So far there's GBA, NES, SNES, Mame, PC Game, all working fine. I have not tried the Atari ST emulator, but there's one in the archives. The VICE emulator needs work, and I have not seen an Amiga emulator at all yet.
There is a lot of activity on the archives though - the software collection grows day by day.