In retrospect, I was fortunate to have bought SP Harriman coaches and a baggage in BRASS when they first offered them in 3 rail. Then as soon as the heavyweight sleepers were advertised, I bought them also. Unfortunately, they were offered in only two configurations, so have each of them. No dinner was offered, so mine is an old Walthers "silver sides" kit upgraded and with an interior added.
So, I would imagine that there should be quite a market demand built up since the last offerings were quite a while ago