Just picked up a Le Duck neck knife. The sheath has a unique locking system that takes a bit to get used to but not bad. Nice blade shape, light. The one drawback is when grabbing it from sheath I can't get a full grip on it..i've not used it yet, this is just my first impression.
Check it out.
Blade: 2.5" / 6.4cm
Overall: 6.25" / 16.0cm
Handle: Rubberized TPR
Sheath: Polyproylene
Lanyard: Black 550 Paracord
Weight: 3.0oz / 85g