Smith & Wesson makes great firearms not knives.

Point of clarification- S&W does NOT make knives, any more than Browning, Colt, Remington or Winchester does. They get a royalty from each one marked with their name, but they don't make them. And you usually find it slapped on United Cutlery or lower end from there. I had a folding kerambit-type knife that was $7 at a flea market, but with the S&W markings $20 plus shipping from Smokey Mountain. It was a good knife for what I needed it for, but when it eventually got too loose and had too much play, I retired it. But I don't think I'd ever willingly trust it with my life, that is why I carried a Vic in my pocket and my LM in my bag of tricks.

Harley Davidson doesn't make lighters, either, but Zippo sure does. Same thing, just better quality.

Take a classic KABAR, hang it on paracord and you have a neck knife. This is a ancient CARRY MODE, not some genius idea by contemporary knifemakers. They have set parameters of very small or skeletonised knives as this new idea to complement those $300 swords.
I've neck carried Moras and Puukkos for years . This is a 4" blade that I once forgot was on me, walked through a major shopping mall without confrontation or conflict until some girl from Helsinki got excited seeing it in California.
ANYTHING can break. Peter at Fallkniven has deliberately broken his fine blades in laboratory conditions.I have to work at getting mine dull, and he breaks them.
Vines are nasty work, one reason people use machetes and not neck knives.
"Respect the compromise"

I hate having anything around my neck

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I could never understand why people like skeletonized neck knives aside from the "cool & tactical" factor. They're a pain to use because even with a paracord wrap the grip is basically too narrow and digs into the palm too much. I certainly wouldn't carry one as a serious backup blade. If that's all you end up with in an emergency you'll be in trouble - I think you'd be better off with a SAK.

In any case, a small Mora makes an infinitely better neck knife. The size/bulk difference is negligible considering you get a much stronger knife with an excellent blade that can actually stand up to heavy duty work. But again, YMMV!