if i am reading the original post correctly, it is about stick tang models which do not extend far enough through handle to get a buttcap attachment?....such as a 5-6 with black micarta teardrop handle such as on the Bradford Angier model?........
I have used heavily both such a 5-6 and a standard 1-6, and i mean heavily, not just cutting/slicing dirty military cargo net, straps, packing and rope, but also brush clearing to 3" diameter hardwood, building campfires, etc.....the 1-6 differs in having the long enough tang to get the buttcap.....both knives experienced a slight shearing of interior glue joint inside handle in the neighborhood of the spacers, to where there was a perceptible click/tick of play in that area....and totally a non-issue, caused by tang flex in highest stressed area during chopping/hacking...
Both style handles have the tang fully epoxied inside the handle, whether stacked leather or solid micarta, the tang is not smoothly polished, neither is the hole through the materials....even if complete seperation/shearing somehow happened, one would be very hard pressed to drag that tang back out of the hole, shearing is never symmetrical, and would be akin to dragging two hacksaw blades against each other....tangs are fully coated in epoxy and rust a virtual non-issue....the fix at the shop to stop the annoying sound/feel for those who object is to drill a hole and inject epoxy....
As for the full tang on the Model 14/15/16/17, the point of the design is to assure the tang does not break under harshest use, and a loose handle can always be repaired, and even cross-pinned if desired outside the shop, and i continue to buy full tangs for family members knowing that for them it will likely be THE most troublefree handle for a lifetime.....my personal favorite is my Astro with old-style cross-bolted handle on the full tang, but that is me.....any can fail and all can be repaired and likely free by shop if used within parameters of expected use of that particular model, so pick what you like and enjoy