IMO, it is really hard to read the stress and twist of a limb on a tree, and figuring out which is the heavy side. That being the case, seems this saw would be pinched and stuck a lot, and getting it wrenched loose when its rigid on the end of that pole seems difficult, at best. If there was a way to put pressure on the limb being sawed off, those stresses may be overcome. But there isn't.
Still, may be better and less expensive than an alternative.
I have a pole chain saw, and that is too often frustrating to read the twist in the limb being sawed. And un-sticking it is not easy without lifting up on the limb a bit.
Appreciate the post and heads-up though. /forums/images/graemlins/wink.gif