Also, if one is expected to travel for a full 2 months, or go home every year for that period, one will end up perpetually destitute. I think everyone knows public schools such as universities, while being generally better jobs than private in$titution$, pay quite low. You don't make enough to save and pay for 2 months of hotels and food on that salary, unless you go extremely cheaply (in Asia, or just China), and don't mind having next to nothing left over at the end. No security ever. Doesn't make sense.

What makes sense is that you'd have the option to stay at home where you work for the remaining 2 months and live off your salary, or else that you would be compensated so that you could do something like the equivalent someplace else.