DeWalt DWHT10038 18mm Single Blade Snap-Off Knife

I am now on my third one of these knives the first two regrettably I have sitting in a drawer because the end caps keep coming off and I've lost them I clip them inside my pocket I turn around end cap is gone can't find it. it would be nice if the belt clip was permanently attached and that the restraining end cap detent button or something you had to push in order to pull the end cap out. Further, I use this knife in manufacturing we use for trimming paper and vinyl off boards and we always have the knife all the way extended after a while the end wears a little bit and the blade no longer sticks out straight and becomes slightly wobbly