Well after some quick testing, sprinting with armour enabled (and Armour Enahce II) uses LESS energy than sprinting without it, and it's pretty much the same speed (minus the slide ability). It seems to be a kinda free mobility enhance

Srsly? LESS energy? WTH? They're nerfing Mobility enhance almost useless, but Armor Enhance is even better?
Great. Time to level AE. On the other hand.....I don't care. Soon I'll have my reboot and then everything is anyway lost....