Its not that its too high class for them to use its that most have no concept of what its really worth, They think $25 is lots to spend on a knife and that fact that it might be $250 or more blows their minds...
I have the same rule for foutain pens, most people don't know how to use them and wil just wreck them if they try. So I have a cheap (by fountain pen standards) pen and knife for loaners. They are still worth more than most people realize, as both are about $50 items, but at least its not agonizing when its wrecked, or lost.
The problem isn't the guy who owns it having nice stuff, its that most people nowadays have forgotten that etiquette requires you treat other's stuff much better than your own.