I just received my Spyderco Ark that I bought online. It is smaller than I thought but it will be a handy blade. The retention of the knife in the sheath was a bit less than I preferred. To improve it, I put a small dab of "Shoe Goo" on the inside of the sheath (both sides) on the nub that grips the handle. I smoothed out the Shoe Goo and I let it dry without the knife in place. After the mod there is significantly more retention which is more to my liking. I wouldn't be to keen to have that sharp blade pop out of the sheath while it was being neck carried :)
Ed
Simple Fix for ARK Sheath
Re: Simple Fix for ARK Sheath
It seems the sheath is kinda hit or miss and retention is based on preference. My factory sheath holds well during running and jumping and any activity i can think to do. Except maybe bungee jumping or skydiving. Any pics of the mod?