A little history about the Clyde:   Originally customised for Walt Frazier in 1973,he is a basketball legend and was a fashion renegade in his time. Walt was the definition of "a cool-pillar of confidence and credibility." Forty years later, PUMA and UNDEFEATED (LA based fashion streetwear mecca) join forces to unveil the new Clyde. Launching April 2011 in London.   Check out the launch party e…