‘IF’ there is any advantage to them, then I would agree with Fin.
If you look at how they work they must be the most insensitive method of bite indication. There is no shot on the line so to cock the float you reel in to sink the float to say 1” of tip. i.e. you’re counteracting the floats buoyancy. As soon as a fish registers any sort bite it takes on the full buoyancy of a bloody great float above it and the initial momentum to move it. Additional friction being the line at a right angle through the bomb/swimfeeder. When they work, my money would be they act as a self hooking rig.
If you want sensitivity in deep water then use a properly shotted slider and stop knot. If its for distance then normal quiver, method or bolt. I don’t see many match men using Polaris.
Sensitivity is all to do with how little weight/force is needed to register a bite. Some of the Polaris floats I’ve seen would support an ounce or more.