This thread reminded me I had this pic in my files which is somewhat relevant to the discussion, though the razor scraper and scissors aren't really viable cardboard cutters. These are just what I had on hand when putting new edge guide tapes on my Festool tracks.
Anyway, as a carpenter, the most oft-used knife on the job is my beat-up old Stanley retractable carried in its pocket in my nail bags. Call it a sheetrock or utility knife or a box cutter, it's the tool-of-choice for thin sheet goods, drywall, felt paper, FG or foam insulation and most anything else on a construction job.
Cutting down boxes doesn't come into play that much at work, though, and that's one task for which I actually prefer to use a folder. The problem with the "box cutter" is its shortness of blade that leads to a trailing tip snagging the inner face of corrugated cardboard, having to switch sides to re-cut and re-start. I prefer to cut boxes free-standing, dropping the knife vertically and like a long handle for grip and a long blade to stay full engaged. While a hollow ground like the pictured Sebenza works well, I really like broad FFGs that track well through the cut, are thin behind the edge, and of not-too-thick stock. Something like one of my Military's or Shiros work great. The other day I cut down some heavy corrugated boxes with my Cheburkov Raven and it just flew through them. Of course being wicked sharp helps too and the edges in most quality folders hold up well if the cardboard is free of sand, dirt, and you stay away from any staples.
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