I've never had my forks leak, but that's probably because my bikes (Kawasaki Ninjas) had standard forks, with the sliders at the bottom, so the oil never leaked out.
The video makes the work seem easy on that dirt bike. It may be a bit more tricky on the Empulse, with much less space around the stanchions. You would probably have to remove the front fender first.
Still, it's good to know that there's a cheap and easy tool out there to fix a leaking fork if I need it.