[tomsem]

Thanks for the suggestions. PDF seems like a better target overall.

I'm still curious about how the various formats encode for 'right binding', i.e. Japanese texts.

Sure, you can reverse page order, but that does not work correctly with two page spreads, where you read the right hand page first and page numbers should likewise increment from right to left. Surely PDF can do this? I must be missing something.

I think ComicTagger lets you set a manga property for CBZ, and CBZ readers are supposed to know what to do with that.