Training en route? As one who's had a skipper feather an engine at night on a fully laden DC3 - at about 100', I hope today we're a little more cautious. However, to waste these sectors entirely would be such a lost opportunity as so much can be learned on empty sectors.
Tracking away after takeoff at very low level? Maybe reverting to MKI eyeball after instruments failed.
And yes, it's just more speculation.