<< I would be uncomfortable using 1.9V on my p3! >>
Whatever, I ran my PIII at 1.9v for about 9 months. I had good air cooling on it and the temps never went above 35 deg. C at load. It was quite too. I sold it too a freind and now he has it running about the same configuration.
The only reason I can see people being uncomfortable with 1.9v on a PIII is if they are using a gorb or some other HS which is not good for OC'ing. I have seen some use 2.0v or even 2.1v for extended amounts of time with a PIII. As long as you have good cooling you should be fine.