Finally Dual/ Multibooting on Droid X

Does it work the other way around? I've been having problems with this for a while now.
It's working both ways for me right now. CM7 is my phone ROM and Liberty X3 is my 1st rom. So far so good.
I am on Apex RC4. I know it's for Init ROMs but has it been tested or will it work on APEX?