I stopped at the Terra Plana store when I was in New York City last month. I tried on the Evo, but I wasn't that happy with it. The heel in the back comes up too high for my taste.
It seems shoe companies (even barefoot-type companies) always err on the side of putting extra material in shoes. It just isn't needed! My favorite shoe remains the Puma H Street. It's just a thin strip of rubber with a mesh upper.
I stocked up on the H Street before they discontinued them, but it looks like they've brought them back.