On one hand, it makes perfect sense in terms of consistent gameplay, and would allow one to jump through a network and activate the stop mid-jump to make sure they don't fall back in when they've reached their intended exit hole.
On the other, the black holes that form the wormhole network have a significantly more powerful gravitational force than a planet, so leaving it as is makes perfect sense scientifically. Of course, the lack of gravity from a system's star, the existence of gravity manipulation in the form of artificial gravity blocks and the aforementioned defensive stop effect, and the existence of FTL in its multiple forms (including the use of black holes to warp places instead of dying horribly) all indicate a sufficiently advanced technological base that renders scientific realism in this regard moot.
I'll throw my 2 credits in the support pile on this one.
