Thanks guys - but now I have two conflicting pieces of info I have both an ANA account and a paid EF account - I'll do some test searching but obviously it's hard to know whether seeing nothing means "doesn't work" or "works, but nothing is available". Anyone else want to chime in one way or another to help narrow it down.
Answering my own question for the benefit of others - definitely visible via EF, as I was able to see LH F availability later this week (and confirmed via a LifeMiles search). Didn't try ANA.