Thom, did you follow something you read or was this just an experiment you did, and is it noticably tougher
Both. Read about it, contacted a swordmaker who does such things to do it to my RD-9, and then used said knife to pierce, chop, and slice wood covered with carpet, plastics, and wires. Have also chopped into a galvanized steel fencepost with my former Ratweiler and S7 RD-9 (microchipping on both easily sharpened out).
Your question is a great one to ask. I don't know how many other people believed the 'toughness' hype about S30V, but I believed it and bought knives made with that steel. It's a great steel, but it's only tough if you're comparing it to untempered glass and pigeon egg shells.
But enough about this. Stealther still needs his question answered!