-Hmm, I'd forgot I had the extension, maybe I'll break it out this weekend if the weather stays dry.
It worked well when the leaves are dry. Never tried it with wet leaves.
I bought one for my (hand-held) blower. It is a bit awkward trying to get the 12' extension vertical and balance it there while holding onto and running the blower. Initially, the extension would keep popping out of the connection at the blower, so eventually I drilled both parts and put a thin bolt through the connection. To tell the truth I haven't used it much. My intent was to eliminate dragging a ladder around, but most of my problems are when a stick clogs the downspout's 45 degree connection, so I have to get a ladder anyways. Plus I don't realize it's clogged until it rains, so things are wet anyways. Since I'm getting a ladder I just bring a 5' long mini-broom (with a ~5" wide sweeper head) with me. That works well as you can sweep about ~14' of gutter from one spot on the ladder and most of the times the leaves and sticks are only in a couple spots anyways.