None of this makes me less of a skeptic. I've used RC materials for commecial portfolios, and they've remained OK in that state, but I'm certain
I wouldn't want them for display purposes. Maybe it's just the fact that I open some of those same portfolios and the equivalent RC color chromogenic prints of the same vintage aren't looking so good after twenty years, while all my Cibas and black and white fiber-based prints look
like they were made yesterday. Not fair... but I'd rather be safe than sorry. I wash my fiber prints for an hour anyway, after TF4.