Justin Peacock wrote: Yeah, I'm extremely deliberate with my feet and that may actually contribute to the wear pattern. Even when placing my foot on a big hold I tend to go for the toe and focus on foot pressure for balance. Maybe I need to be less ballerina-like all of the time and use my inside and outside edges more...
Is the wear more dramatic on your dominant side/foot?
My left foot wears much quicker than my right, I have a full size difference if not more between the two, and my left is the bigger of the two, but not my dominant foot
How do you define "dominant foot"? I don't think there is an activity independent definition like dominant hand (which is usually both more agile and stronger, unlike feet).
Well, maybe it's "preferred foot". A little internet search points to this being a thing.
Speaking for myself, I notice a difference between legs as well as feet. As a lifelong drummer my left high-hat foot is less articulate compared to right hand kick drum. As a telemark skier I much prefer to sideslip a steep icy slope with my right foot back and weighted. My climbing shoe-caused arthritis is worse on one foot. Those things may well be neurological, practiced as well as muscle imbalances compensated, but they do indicate a preferred side. Or could be a technique thing. This is just a hunch why Menna gets uneven wear on her shoes.