I wonder how many of us simply haven't been around for anything past Group 1 to actually see it used?

I have never, ever seen it used but then again, I have also not been in anything but Group 1 or better in many years and I assume usage is a lot more frequent or enforced post G1 (not saying this as a "look at me DYKWIA" thing, but as a "maybe as FTers we suffer from situational/selection bias").