I think if we reversed the OP's thread title & named it, " The correct Tool for the job" , the responses are pretty much fitting.
The slip cases I use when I put knives away in my clutter junk drawer. I've found fumbling with them to get the knife in & out,after taking them out of my pocket,I'm more likely to drop the knife then.
In the shop,I've got some real beaters & sheetrock knives,too.
Did you know cardboard has clay in it ? So it is a good thing to test edge retention maybe,but be prepared to re sharpen soon.
I can add more rambling if you'd like ,but in short,use common sense maybe ?
A $20. knife may hold some sort of value to one person,the same as a thousand dollar knife to another.
If you use the right tool for the job you'll probably not be ' babying' your pocket knife,but maybe saving it from too hard & abusive work.