I just picked up the concrete/royal pair as well. Exchanged for them at FL, on a side note, they got upgraded techniques now to sell you the cleaner andinsoles. I was putting on the right shoe and I didn't even notice the guy slipping the insole into the left one for me to try on and see how well it"supports my back, knees and legs".
They felt pretty good so I was inclined to get them, but they look great on the feet too. One look and I was sold. The design is pretty interesting in terms ofthe tongue area, I didn't think it would look like that.