It's a little tough to think about this really. I at least, and bet some others would agree, am torn between function and heirloom-ability.
For me, my bushcraft/survival/field knives are meant to be used and abused. I would almost be shy to take my very expensive graduation present from my father out into the woods to beat it up.
To be honest, I see these types of gifts as heirlooms passed from father to son, meant to be kept a lifetime. Along those lines, I see a lot of fathers go the high quality folder route. Your folder doesn't take the beating like your fixed blade does (at least mine don't). Maybe get your son a good, trusty production fixed like a Fallkniven, Rat, Bark River, etc... for less than $100, and then get him a very nice $150 dollar folder that he can keep for a lifetime.