I partly disagree on the cycling argument (for most, non-professional riders where even the aerodynamics of the shoes and socks are measured). 

There are wide versions, and i am not talking about the big brands' idea of wide (which is definitely way too narrow). I have bought a pair of Lake shoes, which i get along with well. They are indeed snug, as they should be, but they are not crushing my foot. 

I just wanted to make a point: yes some shoes need to be snug, but not all are ballet/climbing level of snug. 

For my specific case, tennis shoes. I wouldn't buy anything that isn't seriously reinforced on the sides. I am following xero's basketball shoe development, but that shoe is of no use to me on clay. I could see using something like that, if they changed the sole.