Never tried the RR P160, but the old P160 was a long forgotten bitter almond Italian soft soap, that was quite good, and took on Unicorn and fairy dust proportions of hype after it was announced it was being discontinued.
A frenzy of must-have ensued YKW, and all those good "gents" (and by gents, I mean wankers) bought up as much as they could for the 'nuclear shelter', only for most of them to end up on the buy sell thread at bend over prices…
Real classy over there…
So, yes, the old stuff was a tallow soap, and was quite nice.