Loved the movie.
My idea was for smuggling runs that were too short/in too crowded a place for a car or a bike, because the blades can get in tighter spaces then either, and, well, combine that with Wall Running or similar, with
some wax grenades or something, and Light Step, and you're running away laughing while the enemy is slipping up. There's actually a variety of uses for them when it comes down to it.
Also, think about it. Your Technomancer/Hacker has a solid hacking ability allowing them to skate around the building they are hacking, not letting the enemy get a good lock on them. Or at least making it a hard time.