Just heard that one of our existing LORLS users is stepping up to the challenge of developing their own reading list system. This is great news and as they have secured JISC funding it should mean in time that there is another open source solution out there. The project even has a snazzy screencast available.
Unfortunately the screencast does somewhat dis (“their implementations suck”, “it has a badly designed data schema”, “user interface a bit of a nightmare”, etc.) our past efforts which is a bit of a kick in the teeth.