I flew for CAS for about 2 years. I really like JT. I know the story about the lear; I've heard it from a few people, but I don't know if it's true or not. JT seems to be a much mellower guy than he used to be. Maybe having his son flying for the company helped him with that.
I loved my time there, but it definitely was a trial by fire. You have to be prepared to experience all sorts of weather etc.. I knew a couple of guys who didn't last a week there. I once read a pirep that included a pilot quote: "We're getting beaten like a yard dog."
I definitely recommend CAS. it made me a much better pilot.