On a practical level, how can you regulate the 2 week change over? If weather gets in the way, or work, or girlfriend, the aircraft is delayed and you, or your partner, misses out on the alloted 2 weeks.
On top of that, every time you fly that 100 miles, you're adding time to the engine and airframe. Not a huge factor, but if you're doing it every 2 weeks, without fail - thats 26 times a year. Depending on your speed, 26 hrs +/-..... Time wasted on boring ferrying, not a fun $100 hamburger trip.