Note I did say "immediately" sharp - I was purposeful - I think the SFL pops more vs the early FLs, a little less than later FLs....sort of the connection between sharpness and contrast.Need to check about the sharpness statement. But it's clear that Lotutec came independently and much earlier than the change of the coating color. Of my three x42 FLs with purplish coating only the first one I got does not have Lotutec.
I do wonder if there were even more coating versions on the FL. Mine were a very early pair; I wonder if there was a later purple/green. The color on mine was not that strong.