OK, I can't resist this....*s*
We've been to concerts where the speaker arrays weigh a lot more than a LS50, typically hauled up with chain hoists. Obviously, whatever you hang X from needs to be able to cope with the weight.
I've had three bookshelf speakers, vertically aligned, per side hanging in my shop. Each side weighs 'bout 60ish lbs., affixed together with 4 threaded rods with some blocking to basically 'clamp' them together.
Nil vibration between them...and no holes either.
Suspension is chain, overrated for the weight involved; this is done in a fashion to allow the 'array' to be tilted forward about 10 degrees.
This is easily adjustable...if it's on the floor. Not a fan of manipulating heavy objects in mid-air....
BTW, the speakers are motionless even with heavy bass lines...cones moving to and fro cancel out, but it's not a concert hall either.
If you're going to weight a speaker for stability, do it on the bottom. Top-heavy anything hung is not a good idea....
In a 'residential app', the occasional 'bump' needs to be considered. Do not stand up underneath them, nor walk into them. High ceilings are preferable.
You do give up the floor effects on bass, but it works at the ceiling too.
And there's always the corners...
Have at it, J