PWC data on one 50,000 PT6A engines give IFSD rate of <1:340,000hr based on 400m flight hours to date.... so don't hold your breath.
Mate I have sat in the George and Dragon pub in Dar with a very wet pilot who had just been pulled out the drink with his punters after floating about for 3 hours.
And I know enough people who have shut one down in flight in twins.
This is all first hand experience of said engine not third.
I really don't care if others are happy going in them personally I won't be and neither will my family.
That said compared to the tri at full load it won't really make any difference. Mind you I wouldn't go in one of them either.