For others who might be interested, I posted the pic of the original knife that started this thread on the maker's forum and asked straight up whether it was of laminated construction, and if so, what steels comprised the outer layer and inner core.
He was kind enough to respond - no b.s., no stonewalling, no misdirecction, no obfuscating - for which I am grateful:
"That blade is a simple random bar. It is not San Mai.
When i make San Mai, the core is 1995."
Now, as to what "San Mei" might mean - I'll leave to any other interested party to pursue. But the blade originally posted by RL in this thread is not of laminated construction. Period.
Roger