I suppose it depends on what exactly you mean by "preppy" - but if it's stuff like cargo pants, I would argue that it should fall into the comfort segment.

About half of my daily wardrobe is stuff that's advertised as "tactical", but the reason why I actually wear it is because it's comfortable (relaxed fit, stretchy fabric where needed etc), and because it has plenty of large pockets to carry all the gadgets and random items.