Many opinions
After posting my question I found this in another 2732 datasheet:
"
To most efficiently use these two control lines, it is
recommended that E be decoded and used as the
primary device selecting function, while G should
be made a common connection to all devices in the
array and connected to the READ line from the
system control bus.
This ensures that all deselected memory devices
are in their low power standby mode and that the
output pins are only active when data is required
from a particular memory device.
"
I should have found this earlier, but the discussion is interesting. I'll try out both ways and post my findings here.
Know what, I'll also try it with both lines connected to CE.
I'm curious.
After all it says "to use the control lines most efficiently" and not "to use the control lines correctly". This suggests to me there is more then one way to use them.