Has anyone tried the Concave rugby/soccer boots from Australia?

And if so, please tell me about your results. My son is a kicker in American football, and it seems like it would be ideal for him, as it is also marketed towards rugby. I can only find them online, not in any stores in the states. He wears Nike Laser 2's right now, with the shot shield over the mid part of his foot, which seems to help.