Eh. Most of the JKD guys I have trained with come from the Inosanto concepts lineage. Little to no wing chun in what most of them do. Fma? Check. Muay Thai? Check. Some of them were certified back in the 80's. That would include an original Dog Brother. Blocks are simultaneous attacks? That would be a revelation to most karate folks I'm sure. Might want to dig a little deeper than just the Tao of Jeet Kune Do. How does a philosophy teach people to react faster? And how is unique from the core philosophy of any defensive art?