I received my Leki hiking poles a couple of years ago as a gift from my wife. Since then I have used them on every hike I have done and they have held up well considering the abuse I gave them. On one hike I managed to wedge the lower half into a rock crevice and proceeded to trip at the same time. The end that got wedged ended up bent all to hell. One phone call later to Leki and I had the new lower AL piece to switch out.
Later this year I somehow managed to snap off the lower cam-loc plastic housing and got a replacement piece from Leki. 10 minutes later and I was back in business.