Thanks for the responses.
I've been using it for a long time, as back in the day it seemed to be recommended by the more knowledgeable-sounding people on these boards, including Skuzzy.
But these days it doesn't seem to get mentioned much, so the basis for my confidence in it has waned. I've never seen it mentioned on other forums / fora, for example. So I'm considering reverting to reliance on the custom install capability of the Nvidia driver upgrade packages, as do 99.9% of other gamers. FWIW.
MH