My big toes are 4mm longer than my second largest toe, making shoe shopping hard, especially climbing shoes.

Anyway these fit my feet real dang well. I wear a 10.5 running shoe as I pronate, and 10 fits me comfortably. Really comfortably. They bend with my feet. I feel like a dancer.

I use this for as many purposes as possible. I've done:
Wall climbing - work great, of course
Work - pretty inconspicuous, although I have an undemanding sit-down job
Walking - Decent, bit harder on feet than non-minimalist footwear, haven't done distance
Sailing - not good. will grip a deck, but leaves very light scuffs on gelcoat boat decks, when jumping or catching balance
Powerlifting - great shoe for deadlifts, low to the ground, grippy, flat

The rubber does seem scuffy and not durable, but there are outfits that resole these shoes. The scuffmarks that these shoes leave are almost greasy, much more difficult to get off than other shoe scuffings.

I originally ordered 10.5, but the returns process was painless.

Thing of note: i took insufficient caution in transitioning from more cushioned shoes to this flat minimalist style. somewhere amongst walking jumping climbing and lifting i acquired a gnarly pain in my achilles that comes roaring back whenever i put these shoes back on.