Maybe on some... I have some roms work on Kies, others don't. But why bother with Kies anyways (unless you want to get something official from sammy)? There are other programs that do the same (backup contacts, msgs and other things).
That being said... I haven't tried that rom. Why not ask in the ROM thread?
If you need help, check the FAQ first for whatever ROM you're on. Then ask questions.