Most ground aoe abilities in PVP such as SMN Slipstream, DRK Salted Earth, and SGE LB are very visually distinct between friendly and enemy versions. Skyshatter's ground effect needs this distinction desperately, especially because of how popular DRG is in frontlines. You are very likely to have a large number of DRG spread across all the teams, and knowing if you need to guard against it or not is very important information.