Yes we have a strong bond with CrossFit. Greg Glassman loves the Zone. Actually, If you read Barry's first book "Entering the Zone" look at the inside cover of the jacket. Barry writes "we should be eating like cavemen and not like cows" , talks about our genes not changing in the last 100,000 years and how 8,000 years ago there were no pasta or bread.. I may be a bit bias, but after reading a large amount of material from several Paleo authors I always feel like I am reading exerpts for "Entering the Zone".
The paleo is a good way to eat and is the closest "way of life" to what Barry Sears has been saying for 25 years. However, it is my opinion that the "ZoneDiet" is far superior for the individual and the athlete alike. A Paleo diet without the checks and balances of the Zone is at best (i am sorry to say)...lacking.
Check out The Power of Z2 site. It is a micro-site we develpoed for the athlete. http://thepowerofz2.com/#!/