Have you tried hierarchical notebook[0]?
If anyone else does have the problem: add {KEY_SR, "sup"} and {KEY_SF, "sdown"} to ui_binding.c and change "sprevious" and "snext" to "sup" and "sdown" in the configuration file.
I won't test-drive it at this point though because I don't see it doing anything the text files haven't got covered (that I need) and there's nothing to install to use those on each additional device.