Well to give you another direction to lean in... Rather than just a knife... I usually put my Leatherman Charge on my left pack strap. It has a knife, and lots more that come in real handy being that close. I just attach something like a single molle pistol mag pouch or one of the nice utility pouches at TAD. I keep a flashlight on the right shoulder strap. If you position it just right you can kinda use it like a shoulder mounted light to light your path in low light. For that the Maxpedition flashlight pouch works real well.
"If you can't take a little bloody nose maybe you ought to go back home and crawl under your bed. It's not safe out here. It's wondrous, with treasures to satiate desires both subtle and gross, but it's not for the timid."