I flew for King for a year and a half.. Never had an in-flight mechanical. Never paid for my training (he asked me about it; I told him the check was in the mail). I only flew the singles for a couple of months before moving up to the 402.
Bob Trout was our chief pilot back then (Late '90's). He was a good guy to work with. He knew a great deal about the canyon because he'd helped design all the routes we used to fly -- the ones that actually let you fly beneath the rim of the canyon in designated areas. Not long after I left, they erased all those routes, and set a minimum altitude of 10,000 feet over the whole thing.
For those considering the Twin Otter right seat, just remember that PIC reigns when you're looking for the next job. I'd take 500 hours PIC in a C-402 over 1,000 hours SIC in a Twatter any day.
Slipstream