I'm sure it is. We've made a couple like that. Not having a belt loop or keeper strap or anything other than a basic slip-cover certainly makes things a
whole lot easier for the cat or kitten making the sheath... that's outstanding for pocket knives and kitchen knives... not so much for belt/pack knives.
Why are bottle openers always so thin? Then I have to pop it like 3 times to get the lid open. Where if it was slightly larger it would be a one and done!
That's a very interesting question, and one with which I continue to struggle. I can't speak for any other custom maker, but I'll wager a guess that they've considered those questions as well. My first question is, how badly/quickly do you really need to open a beer? Is a person paying for the absolute fastest way to open a bottle, or are they buying a piece of a craftsperson's art? Every liquor store I've been to in the last couple decades has a bucket or two of cheap openers on the counter as a loss-leader. Right next to the cheap-ass lighters and stinky incense sticks and other imported keychain junk.
There's that to consider... even most high-end beers come with twist-off caps nowadays, after all. Who "needs" an opener at all, much less one shaped like a dang gorilla, designed by the current world record-holder in the 2x4 chop and the current BladeSports champion? I got news for ya kids,
no one "needs" that. But it's freaking cool as a polar bear's ass
It's really all the same for a bottle-opener or deer-opener or people-opener or tomato-slicer or tree-chopper-downer.
Heavier/more advanced steel (or titanium or whatever) adds a
lot of cost, in many ways. How much are our clients willing to pay for that?
Too light/thin, and it may cut remarkably well, but not be resilient enough for long-term use. Too heavy/thick, and it will likely be more-or-less effective, but probably clumsy in the pocket or unwieldy in the hand or on the belt... a giant heavy knife is the kiss of death to some, but a huge selling point to others.
Too soft, and it won't hold an edge; too hard and it will annoy folks who don't like to sharpen.
Such are the problems facing people who actually
make these things... it's a never-ending conflict between what's too much, and what's not enough. That's what makes this line of work endlessly fascinating.
