As AngelKing eluded to, there is absolutely no set schedule. You will work according to the length of particular contracts or missions you get assigned; sometimes a day or two, and some last several weeks, it varies. The bottom line is there is no way to predict or have a "typical" schedule there. There are some civilian contracts that facilitate a set rotation but while I was there only a few pilots were scheduled that way.
When I was there, about 90% of my flying was military and government contract work. Again like AngelKing said, there is really no other place (particular on the civilian side) to do that kind of flying and visit so many places so randomly and frequently. It was extremely unique and I enjoyed it. There was very little air ambulance/med-evac then (maybe one a month or so for the company). In three years I never did one, but I do hear that that segment has been refocused lately.
The pay seems to be misunderstood, you are paid directly by flight hour (with other incentives like wait days, travel days, etc). There is a minimum which is definitely MINIMUM pay but it is a set dollar amount based on position and not a block set of hours. There were times, between contracts that I only got minimums, and it sucked. But when you fly, you will easily exceed that. To use RIOtopilot's terms, I easily made above regional captain pay; the minimums were close to regional FO pay.
Ultimately, the bottom line is you are going to be GONE A LOT with this job if you want to make money. If you do not want to be gone around the globe for weeks at a time, then I would advise against it. I've stated it in other Phoenix threads, it was the most flying fun I have ever had and a great group of pilots to work with (management and admin. can be a different story as with most operators).