I had them on my larger SAK folders but when using the tools it did get in the way so I removed them but still have one on my SAK Executive which helps draw it from my pocket.
My clipped folders tend to all have lanyards on there or what I call Bobtail fobs as they are short so I hook around them with my pinky to help draw the knife from my pocket.
And on fixed blade knives it really can help to draw the knife from the sheath too.
Untitled by
GaryWGraley, on Flickr
IMG_4560 by
GaryWGraley, on Flickr
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