There are two differences between the wall-mount hanger & the floor-stand hanger:
floor-stand will not swivel/pitch, it stays level
the foam bushings that touch the headstock do not spin on the floor-stand, but they will spin on the wall-hanger
So, bearing that in mind I had already decided to put 1 narrow-neck adjuster on the wall-mount, which actually makes it level when the asymmetrical Ibanez heads are in there.
Reason being that when those bushings can spin the compressed part can go into the channel parallel to the neck of the bass & make the gap in the channel wider, thus getting closer to not containing the instrument.
OTOH, the floor-stand's difference actually give it the advantage to holding the instrument in-place. I put it in there today & tugged on it with a fair bit of force, not coming close to coming out.
With the wall-mount hanger I could have pulled it free, because of the aforementioned attributes. The thing tilts to match the force & the compressed area of the bushings could roll into the gap.
Another reason I put the extra bushing on the wall-mount is because it will he hanging there 23 hours/day, whereas the floor-stand will only get used when I take the instrument out back to perform for the trees.