I'm familiar with the term "skin out weight"- and it bloody well should include your consumables. Anything else is a falsehood, like calculating the take off weight of an aircraft without including the fuel. The only reason you'd lie about such a thing was to have higher brownie points with fanboys.

11 ounces of PLB can also be a SAR callout 72 to 120 hours earlier. 16 ounces of FAK can be the difference of being alive or buzzard poop in 12 hours. So don't bother peddling that schpell about 20 days to me- I've been hearing that silliness since about the time that algae tablets were the fad food of the day. Didn't buy it then, don't buy it now. I consider it stupidity on par with some of the stuff that BOSS teaches.