I think this boils down to your backpacking style. I know plenty of folks on here are more into the survival stuff, ie. covering all your bases of possible situations. I myself am more of a lightweight backpacker, therefore I would not carry the RC5 backpacking considering how much it weighs. I would probably just take my izula since it is so light. Now, for dayhikes, I do take my rc5 just cause it is fun to carry around when weight isnt an issue. I know that when my back and hips are sore from a weekend backpacking the last thing I need is a 1 lb knife. If I had to choose between the 2, I would go with the lighter one.