What an awesome idea, fantastic for speedrunning.
It's difficult at first, but once you learn to "vault" it gets incredibly satisfying to fly around :)
Also, I loved the little things like those green banners that help navigating the level and the fact that there are teleporters rather than some spikes or other similar stuff so you're immediately brought back to a "checkpoint" without losing any time/restarting/etc. Just great design allaround.