I have a Dakine harness and did my usual pre-session safety check on my gear and found that my line cutter knife had disappeared from the pocket on my harness. I couldn't immediately get a replacement so considered other options. I found this stainless steel knife at Anaconda and it seemed perfect for what I wanted, and even though I was was prepared to pay much more, this fitted the bill perfectly for what I wanted, for less than $4! It has a locking sheaf, a line cutter and the knife itself is extremely sharp and stainless steel. I removed the spreader padding strip and rotated 180 degrees so that the knife pocket was on top. The knife fits in securely with only the handle protruding, but I may fit a small velcro strip over it just to insure that it can't come out unintentionally. I have been on the water five times already and it hasn't moved. I may also attach a line to the handle as well.
www.anacondastores.com/fishing