Yeah, I do have Nandroid of my Insercoin at the moment, been restoring it quite few times when new ROMs are been tested. Now I installed Android Revolution 12.01 and restored user apps with data from Titanium Backup + created manually all necessary accounts and system settings. I'll create Nandroid backup from this also when I'm sure that everything is working fine, let's try and see.
I've read elsewhere that it's not necessary to create full wipe if moving from one rom to another IF base is same. Is it so? Devs tell that you should do full wipe if you are coming from different ROM.