I don't doubt that they tried but also i don't think that we can call one of those"cute attempts" sub-surface scattering. :smile:Tri-Ace PS2 games, Star Ocean 3, Radiata Stories and Valkyrie Profile 2, amongst others probably, used a technique to create translucent materials, specifically for the skin of some of their characters.
In my opinion -judging always from the visual result- i would say that sub-surface scattering in video games starts this generation with xbox360/ps3 and even more with dx10 PCs.