For reference:
View attachment 733681
My first issue is that the nut that allows the locking mechanism to function isn't attached to anything... so one fell off somewhere in north-central Colorado when they were attached to my pack (see replacement locknut at top left of the picture, above).
My second issue is that the nuts they provide are too slippery... so they are basically impossible to get tight enough when there's any amount of moisture, snow, or ice on them. Completely impossible with gloves on.
On every other pair of poles I've ever owned (5 or 6 at this point), the "handle" portion of the quick release mechanism is what rotates to tighten it (the black plastic curved flap that's on the bottom of the joint in the picture). But if you rotate this piece on the Cascade poles, there's a nylon washer that gets un-seated from the recess it fits into... and it then flips around noisily while you rotate. It gets harder and harder to rotate the handle as things tighten up... so then this little washer has to be re-seated by making little partial rotations of the handle. One of my washers broke from all the force this put on it... which then made it almost impossible to tighten that joint--even with pliers. Luckily that was a top joint, so I could supplement with duct tape. If it was the bottom joint (which tightens the tapered lower section of the pole), you'd just be SOL and have a short pole.
I found myself taking 5+ minutes, gloves off, in 10 degree weather with blowing wind just to adjust the stupid things so I could use them... which is a non-starter. To me, one of the big benefits of trekking poles (versus cheapo used ski poles) is the ability to quickly adjust length for uphill/downhill, traversing a slope, making a shooting bipod, etc.
Maybe I just got a bum pair... but it's worth it to me to pay an extra $150 for poles that function.