I'm a 3.0-3.5 player who gets out some 4-5 times a week in matches and drills. I got these due to my inability to heal from my fasciitis and the fact that my Prince T22's were no longer working for me, with or without orthotics.
First, the jury is out on wear and on court performance since I'm not seeing the best weather in our forecast!
However, out of the box, they feel the most awesome I've ever felt in a shoe. I've got a wide toebox (not high, though) and narrow heal. I cannot bear a hard arch support due to the fasciitis or I go on fire, no matter how much I stretch, pre-treat, medicate, etc.
I ran around the house (to the joy of my dog) and outside to see how it flexes and performs with impact.
This arch support is there, but it's not hard and not too high. The heel is gripping just perfect and that's without overusing the lacing system (which is pretty solid unto itself with the ability to pull and cradle your foot tighter). I find it does not roll my ankles strangely nor does it me