I've been carrying one daily for about six months now. I also have a prototype (Tigershark). The production PUK was a real disappointment when I first saw it. It felt kind of cheap. Then after playing with it awhile I found that the grip material felt just like a Glock (which I carry about 14 plus hours a day). The knife is very flat and it conceals well. For a duty knife, I still carry a Strider, but off-duty I love the PUK. I hated the sheath-It is gigantic for a nice slim blade like the PUK, so I had Skunkworks do a custom sheath for me, and it works great. I carry the PUK against my skin-no corrosion problems at all. It cuts everything I have tried it on with good results. I find that it compliments my Glock 36 well. Light, flat, easy to conceal, and impervious to rust-sounds like the perfect daily concealed carry package to me.
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He who advances is sure of heaven-He who retreats of eternal damnation.