Alot of the incidents with the 208 come from icing encounters and the lack of performance with the Ice Vane on. In the US they lose one every winter. Talked to a guy and saw plane after a full power decent back into field due ice. Not nice.
Pt6 can handle alot. Flown plane with two of em and checking the oil is listed in our ops specs as a maintenance function not a pilot function so there you go. No need to climb on the wing!