I may be wrong but I'm pretty sure the Xuvias were a concept shoe only and never put into production. So, I don't think you can buy a pair.
If, however, you are in the market for a pair of shoes for Parkour, take a look around the consumer boards. I'm sure you can find something you like. I recommend Puma Cabana Racer II's or any classic or retro style Asics.