Fair point, but not all that much more training. I flew a -235c as a low hour PPL (albeit one with a fair bit of non-PPL aeronautical experience) a few times, and didn't struggle particularly. Does require a good briefing and a VP prop checkout.
Incidentally I now fly a syndicated -161 for recreation and business trips, and frankly can't see that the big engine offers any particular cost-advantage for such trips. I would like a VP prop on it 'though.
G