I carry a couple of Mora knives and save the head and legs to last, and have not shot more than two animals at a time so do not knacker the edge.
However if I was in need of a sharpener I would not want to use one with that fixed (and to my mind obtuse) vee angle. I use one of the folding DMT blue and red to sharpen most knives, it is not much larger to carry and means you can redress at exactly the angle you require.
I think they also do a key ring version, but the longer the tool the easier it is to maintain the angle relative to the blade.
Back at the ranch I hone, strop and or buff before the blade I go out again.
Alan
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