Remoak,
I did look in a couple of my textebooks, heres what they say.
QNE. Is ot an altimeter setting, but is the height shown at touchdown on the altimeter with 1013.2 mb set on the subscale. QNE is used at very high aerodromes where the QFE pressure is so low it cannot be set on the subscale.
763 is not very high.
QNE. Common usage accepts QNE as the ISA standard pressure setting of 1013.2 hpa. However another definition of QNE is the altitude displayed on the altimeter at touchdown with 1013 set on the altimeter subscale. Also referred to as the landing altimeter setting.
Within the latter meaning QNE is only likely to be used when an extremly low QNH is outside an aircrafts altimeter sub-cale range, and the pilot requests QNE from ATC.
Again very unlikely unless your in a cyclone/hurricane. In 22 years of flying I have never had to use it.
So we're only going to use it in 2 instances unless your on your on your own time in your own aircraft on a nice visual day and fancy giving it a go for a giggle.