Sounds interesting but not true. TLDR When using utility kickstart mods, the class ability energy should be refunded after Glacial Fortress ends, with extra class ability energy granted for each armor charge. *** Utility kickstart mods do not work on Icefall Mantle as they used to. I have two utility kickstarters, stacks on stacks, two charged-up mods, a kinetic siphon mod, and a reaper mod. I activate my class ability and activate Glacial Fortress. I can see the utility mods grant a bit of class ability since the activation depletes my class energy, but then my class ability immediately fills up again to allow me to "cancel" Glacial Fortress. I get a few kills and collect the orbs. I now have 5 armor charges. When Glacial Fortress ends, my utility kickstarters use up the 5 armor charges but grant any class ability.