I tried the Camillus and Stiff Kiss a few years back, what threw me off was the weight. Hard plastic sheaths with square corners weren't any fun either. I used them with dog tag chains and they are actually too long for my torso - given that the knife handle is pushed out at the lower rib cage where my mature physique is no longer as buff as I want. I guess.
Been wearing a CRKT Folts Minimalist lately, with the tanto grind, and it's working well. I looped the chain thru an extra set of grommets to shorten it up, and it fits. No noticeable printing. Access is, of course, poor under a shirt. If your work situation is highly social or you're in the public eye, then neck knives are largely back up, not daily users. In that regard, getting one that stays hidden without peeking out or printing is the key, especially if it's an active job.
That, to me, are the first features in a neck knife - it has to be comfortable in carry, and the suspension short enough to conceal it, not create a print. After that, it needs to be secure in the sheath no matter what - which means a stiff extraction. Then the normal stuff is considered - edge thickness, blade grind, heat treat, material, grip, etc. But, if its not that much a daily user, then some compromises can be accepted. A knife for backup can be cheaper steel, as long as it's got an appropriately thin edge and grind. Since it's just riding along 99% of the time, it'll stay sharp. If it's a user, then ramp up accordingly.
That's the differentiation in the products offered - some are backup designs oriented for LEO/Mil and aren't daily users, others are. Hence, take a long look at the product and determine who it's best intended for (not necessarily who it's marketed for. ) Every feature, notch, and shape on a knife has a distinct purpose in use. Learn the language and you understand them better, and make more productive choices. The stinkers don't pile up in your sock drawer as fast.
