Re: GFCI- W/Light Switch
"Now if the internal GFCI contacts were closed and the switch was wired as above when the switch was closed this would be a dead short to the supply lines and blow a fuse or trip a breaker at the panel. It wouldn't trip the internal GFCI contacts since the sensing/control circuit isn't active."
I'm sorry but here you are wrong. The power is wired to the load screws and if the reset button is pressed it will feed the GCFI circuit. The switch is wired to the power screws so if the switch is closed the GCFI circuit will trip faster than the breaker or fuse can react so they won't trip or blow. That's why we use a GCFI to trip faster than a breaker or fuse thus offering us greater protection.
P.S. The OP may be gone but that should not keep us from broadening our horizons.
Be sure you live your life, because you are a long time dead.-Scottish Proverb