I have been closely examining the defensive metrics of fighters utilizing the shoulder roll in contemporary matchups. While historically effective for counter-punchers like Floyd Mayweather, its application in the current heavyweight landscape seems to carry higher risks due to the increased frequency of overhand loops and non-traditional angles. From a purely strategic standpoint, do you believe the Philly Shell remains a viable primary defense against modern 'swarmer' styles, or has the technical meta shifted too far toward high-guard parrying and active clinching? I would appreciate a nuanced discussion on the footwork requirements necessary to maintain this guard effectively without being cornered against the ropes