...in order to use some of the more sophisticated features?

Does it ever lag the production Prince? Is it more flakey? Etc. Interested in people's experiences.

Thanks.

Current Prince for Books builds lack recent Prince features, so we are working on merging the branches to bring it up to date with the main branch.

Thanks -- how long would a lag like that last roughly?

Interesting question (which I might have seen answered somewhere but can't find now) -- why not merge the two?

We are working on merging the two! But they were originally separate for ease of development, as they had different objectives and performance criteria.