depends on your arm reach, i am a sasquatch, so i have tremendously long arms, those stretchy ones are too short for me,
man up , use a lanyard for med to large saws, carry a small saw with a biner or ladder hook on the belt,
start with an echo if ya have to then move up to a stihl if your worried about droppage of saws,
oh yeah most everyone has dropped a saw in their time
sorry bout the man up bit, just the climber in me:>