Such a creative concept! The falling actually feels weightless, though it seems like you can pretty much get through the whole game just by flipping gravity.
Glad you enjoyed the concept! At the moment, the system gives you infinite time to travel, but I'm planning to add a stamina bar (or energy bar) to limit movement. I'm also thinking about adding unlockable upgrades that will allow you to stay in 'float mode' for longer. Thanks for the feedback!