Havalon in the bino harness, and adding my Victorinox 4" utility/multi use blade inside the plastic blade cover this year. The weight on that Victorinox comes in at 3.4 oz including the blade cover. My thought is the havalon can be used for skinning chores and the Vic for meat work/deboning, backstraps, etc.
Third knife is a cheap lightweight folder in my pocket for quick access/daily needs.