Hey guys, I finally tested these out this weekend in Yosemite.
The traction on them is actually pretty functional WHEN they stay on.
I can't speak for all shoes…but I had them on a pair of Merrell Moabs mids, and they fell off 6-7 times in perhaps 300 yards…when I walked carefully. They kept wanting to move forward no matter how tight I made them. The failures were sudden…fine one second, then the front would fall off, turn upside down with the spikes facing upwards stabbing into the sole of my shoe.
I did kind of solve this by threading the crampon straps through my boot laces. (Top strap under the bow of my laces, and bottom strap under the bottom lace rung.)
This helped a lot…they stayed on for the next 3 miles….but by the end were stretching out my laces and had moved forward about an inch from where I had originally put them.
Also any lateral movement would open up the "y" shape and I'd have a sideways piece of metal sticking out that tripped me up.
Again…maybe these work great on other shoes. Just not so good on merrell moabs.
Conclusion:
For trips where I need traction…I'm bringing my microspikes. For trips where there's a small chance for traction, or just a small section….I'll use these. (Threaded through my laces and walking carefully)
I'm not usually the guy to say stuff like this…but I think a redesign is in order. Perhaps with stretchy straps that secure around the ankle to prevent moving forward…..and the "Y" shape could be replaced by more of an "8" shape with no hinges. Yes they won't fold as small…..but….at least they would stay put.
If anyone had better results then I, please respond with any pointers you may have.