PT6.... who is the largest operator in the world?
Air France .... or Air Asia
......
either way I'm not too concerned. Most obstacles are close enough to the airport that if you are worried about OEI climb gradients, the OEI ACC ALT is usually sufficiently raised high enough for obstacle clearance that there isn't a Max EO ACC ALT limit.
Securing the engine prior to levelling sounds reasonable. For those who do otherwise I ask why?