Not sure about the foot patterns. I'd have to see a live ball vid but crossover is generally the way to go. much quicker.
I don't know if they were selling those or not. We didn't go into any shops because we were mesmerized by the tennis allllll day. We only stopped watching for 10 mins just to grab a slice of pizza.
Ian from essentialtennis.com was there filming. He's going to have some excellent footage.
Yonex VCore 100s - SW 351 6pts HL
Tour Bite / Luxilon NG 16 @ 51lbs