well, i can tell you
you paid zero for that sheath, resulting in an overall purchase of a knife with a protective functional option. you paid a large percentage MORE for the ESEE. "suck it up"
the new sheaths are much better if not perfect. KaBar actually listens, and sometimes i think as many as 3 times a year, makes adjustments... tweaks. fixes. do the old customers get benefit? perhaps not. new customers? yes.
*proper* technique in taking your knife out helps. don't drag it. the glass sheaths are STUPID STRONG, and need to break in. you can accelerate that with a hacksaw blade, or time.
if you are the type to put a atom splitting edge on a BK2, and then notice you can't shave with it after 6-12 bad deploys, well, uhm, you know? geez. stop messing with your knife while you watch zombie tv, and well, use it.
do you figure that if someone *used* their knife to gut a deer, split some wood, it might get dull that way too? or would you complain that it's not shaving sharp after a day of hard use.
yeah, i put a 2000 grit edge on a necker, have multiple generations of sheaths, dulled the knife a little, couldn't split C hairs, and well, still had "real world results"...
gah!