Vantaggi
Comp time if you can ever take it. No one pays attention to how much you call off as long as you fill your shifts. 2 sick hours earned a pay. Get minimal vac and personal time from the start.
Svantaggi
Management has no idea what day to day is really like. If you can't cover a shift you work it regardless of you have already worked ridiculously long hours. You have to find a buddy to be responsible for your sites or you don't get to take your vacation/personal/comp time. Then oncall is either every 3 or 4 weeks depending on which region that you are in. When oncall you are responsible for 16 or 17 sites for either a week or weekend. Then, when you go over the magical amount of overtime that they allot, they will punish you. It doesn't matter if you work over 22.5 beyond your week at your sites for free, but don't do it at sites that the company would have to pay you for or it's a corrective action.