Jumping of a cliff activating your glider and getting shot by a Hylek ranger or something, puts you into combat, and that sometimes, not always, makes your character draw its weapons, which looks SUPER awesome on my rev wearing dual swords. I know you can’t activate any skills and the sort while gliding, but being able to draw/stow your weapons should be made available. They already have the animations for it!
Screenshots: http://imgur.com/a/vJh9f