The stacked handle has been used for many years in the knife making industry, and Ka-Bar was a classic example. There's a couple things that I would throw out there.... just food for thought, which may or may not have any bearing on cues
EVERY stacked leather handle that I have redone has had a rusted tang on the inside. The leather retains moisture, and so over time it rusts the tang of the blade. (there are pics on my website if you want examples) It's the same reason you wouldn't store your knife in it's sheath....moisture.
The compressed rings used for knife handles are also usually soaked in epoxy once close to final size.....You see that a lot with leather, paracord, jute, etc....
In the last few years we started to see Ka-Bar's with a Kraton "synthetic" handle, which isn't supposed to be slippery when wet, like the leather handle. So I dunno how much of that pertains to cues, but either way it sure is a nice a look when finished out ...