I have an M38 with an alloy frame and a stainless cylinder. It is a former Michigan State Police revolver I bought from KY Imports.
I saw an ad for a K frame with the same arrangement, but I can't remember where.
Some people can't stand them, but I like mine.
I thought I saw them called Palominos rather than Pintos.
I have the article you talked about here someplace, but it might take me until December to find it.