I think Misters Carter & Weimy would completely and ‘without wax’ (sincerely) agree with your special forces friend. Since we’re speaking about a fighting knife and not the woodsman’s survival blades designed to perform feats of woodcraft associated with building homes and cutting firewood, I think somehow you missed something in the “build-up” of that cute video.
Granted, the video is more like something you or I would have shot back when consumer “beta” was the best thing going. That is, outside the day’s broadcast industry. No one had a clue 20 years later the 4 to 8 k ultra-high definition which was the purview of NASA at the time would ever become ubiquitous in everyone’s cellphone and Google would buy code to translate such extreme definition into low bitrate data that could easily transit old DSL circuits!
But the point I really want to make is, that the FS-1 knife is 5 ounces unsheathed. Maybe that’s a bit heavier than my first fighting knife, a 7-inch Fiskers fileting knife; but then, I wouldn’t ask that first blade to do everything they demonstrated and take a 40-second field strop to pierce and slice through a ripe tomato in a drop test. (Rather the equivalent of easily sawing through Levi’s and severing the arteries on the inside of the thigh or upper arm.)
So, I suppose your friend and Mr. Carter were speaking about very much the same functionality - plus a lot of the needs Emerson points out his blades are designed for a day in day out utility service.
Anyway, if anyone would like to see how Murray Carter gets to his blade performance, check out Blade Sharpening Fundamentals . (which is a hell of a lot longer video!) And do some research about this guy - very interesting life lived/living.
Cheers!