Nobody will ever challenge Bob's modeling and photo results, just the ability for the rest of us mere mortals to reach that level without achieving N scale PTSD.
I'd love to be able to make my own custom trackwork, I've tried, failed, will probably try again. My N/Nn3 diamond was a bust. A reverse-curve diamond is in my future.
But to his credit, he did inspire me to actually try, and succeed, to using Code 40 rail in Nn3 track on Mark Graulty's printed tie strips. So to the impact that he's had on the rest of us even trying what seems impossible, that's a plus. But yeah, I'll also keep using Peco C55 as I'm ham-handed enough that I've already proven I can kink my Nn3 track if I'm not REALLY careful.
Same thing with Dave, the HOn3 stuff you're doing is just freakin' epic and the overall feel of equipment, scenery, track is outstanding. You could put 3-rail in there and it still would be that way.