In the first one: So long as they are available to the general public (easily!) and meet the other guidelines: Sure. They are still obviously shoes. Runners wo

In the first one: So long as they are available to the general public (easily!) and meet the other guidelines: Sure. They are still obviously shoes. Runners would choose which tech they want to go with and since there are price restraints and rules about them being available to everyone for months, I don't see an issue. The sport is going to look the same to everyone else. It isn't going to change anything: It isn't like professional runners are going to be using cheap, bottom-of-the-line running shoes any more than a swimmer is going to wear baggy swimming shorts. I don't mind customizing shoes based on activity and weight and so on. In your second example, he isn't testing shoes. His shoes are still on his feet as he uses the things. Obviously those wouldn't be left in running because you aren't really running. I'd understand much more if we were talking about amputees, and then it would really depend on how it compares to two-legged folks doing things (I don't know the advantage/disadvantage compares here).