I think it would be helpful if the OmniROM zips contained some sort of check routine, so the file system type could be preserved and future updates are possible without the whole process of backing up, reformatting and restoring again.
I know the file system type depends on kernel support and also the custom recovery must be able to work with it, but I think it's the users responsibility anyway. I mean, either you know what you're doing or you leave it alone, right?
I hope this gets realised or there is some compromise. Currently I'm using latest OmniROM with Devil's recovery and kernel without dualboot.
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