I did some research before buying a river knife, only knife with decent reviews, can't testify to Gerber's quality, but this is a knife that stays where it belongs. Had it for over 2 months and the thing has not popped out of the sheaf. I had a friend loose a Co-pilot but that's because the actual sheaf broke, with the attachment clip still attached to his PFD. NRS replaced the knife but im sure my friend will use a lanyard like myself next time. Only issue is that it can get in the way depending how you rig it to your PFD. But overall a solid knife

This knife replaced a Gerber River Shorty for me. I keep it on the outside of my PFD (P-vest), which is 99% of the time fine for whitewater kayaking and rescue scenarios.
It is somewhat bulky if trying to climb into a raft from the water (gets caught on line).
Like any knife kept on the outside of a PFD, I do recommend attaching it via a cord so it does not fall to the bottom of the river...

This little knife has it all -- a great sheath that clips securely to your PFD and holds the knife firm - yet easily accessible and unlockable, a blunt-sided cream cheese/butter spreader, bottle opener and a blunt tip (in case you over-used that bottle opener and got a bit klutzy). A great piece of gear for river runners.