Over-all length or blade length?
If blade length ... I got 54 years and counting consective daily use of a sub 3 inch blade.
If Over-All length ... for
me that would be an unwinnable challenge.
I've tried them a couple times over the decades, but I just can't warm up to the "Peanut" class (2 7/8 inch or less closed) knives for my primary/only carry.
There are some who carry them daily as their EDC, and get long fine with only the Peanut, or a SAK SD Classic, or a Christy Knife, as their only knife. (in many cases it
IS their only knife!)
They do much more with them than just open letters, packages, and peel an apple/cut a chaw offa plug of tobacco, too.
(no doubt many wonder why some insist they "need" a blade over 1 to 1.5 inch in daily life.
"It don't have to be big; just sharp" is their mantra.
My paternal gramps and my dad were among their numbers.
Some days I "required" a longer blade (scraping off head gaskets and carbon build up, cutting radiator and heater hose, fan belts,, scoring drywall, wood, steel/brass/copper/aluminum, and PVC pipe with my Buck 110, instead of the stockman or Barlow in my pocket. Or a machete for removing coconut palm fronds and cutting/chopping to 3' (+/-) and putting them in 55 gallon trash cans, so the trash company would take them. (they refused full length 12 to 15 foot fronds, and/or cut or whole loose fronds stacked/piled up near the trask cans.), removing coconut husks and opening the coconut, etc. for example)
I still used a sub 3 inch blade on those days, however, for food prep, whittlin', scoring drywall, and other "light" jobs ....