The inverted method essentially involves waiting for 45-90 seconds and then pressing. It's not going to leak or anything when you flip it unless you go absolutely wild. It's no harder than making a non-inverted aeropress or a pourover.
Or if you accidentally put the plunger in the wrong side and don't notice before you fill it up. I did that once :)
The nicest thing about the inverted method is the consistency of results, because nothing's leaking out during steeping.
Still, I hesitate to recommend it to some people, not because it's difficult, but because I know they might use boiling hot water straight from the kettle and risk injury. Under the right conditions, it can separate when screwing on the filter cap, due to the steam pressure.
Or if you accidentally put the plunger in the wrong side and don't notice before you fill it up. I did that once :)