This exactly. The ARK is one of the few truly unobtrusive and comfortable neck knives.
The market is flooded with bulky, chunky, heavy and cheapo neck knives that are a hassle to wear.
The ARK, and the Minimalists by CRKT are the only ones I find really do their job.
You won't notice them there, carry all day long without worrying about retention or sheath problems. And when you need them, quick and easy access.
Really convenient if you don't want to draw attention, and easy to maintain and clean.
I found these neck knives to be perfect for improvised food prep or discrete package opening.
The steel is really easy to sharpen up virtually anywhere. On the coffee mug, the car's window...that's really convenient if you move a lot or travel frequently.
And they tend to be quite rustproof, or totally rustproof if we're talking ARK from Spyderco. Important if you sweat a lot.
I carry neck knives daily, and find them really useful. YMMV, of course.