If you live in major metropolitan cities that has trans-con flights, it's possible to sit long-call comfortably at home. But let's say you sit NYC long call during winter, and you live in Eugene, CA. Scheduler calls you at 9pm pacific time for a 11am next day show at JFK. Is it doable, yes, but not dependable. Unless you've commuted to JFK/LGA, it's a whole different ballgame during winter.