Hehe paragon, there's also the healing rate buff through eating, which could definitely be considered pvp related too. But then again repairing items cheaper and easier and getting more components even has a slight effect on ones pvp capabilities, so I guess there is degrees of influence.
But if poison gets introduced to pvp quite heavily, then Snake Eater should probably be reconsidered as pre 24 perk, not that I can see anyone taking it (unless it was buffed).