If you want to buy a cheap junk knife, get the "tactical" folders sitting in that bowl at the gas station or hardware store counter. They are at least large enough to hold in the hand somewhat comfortably.
For many a hundred years I millions of people carried a Case slipjoint. Never had a problem because I know as long as they knew how to use a knife properly.
Word. There's nothing wrong with the traditional slip-joint. You just can't use it all crazy-like. Of course, I've also seen someone cut herself egregiously from a failed lock-back. Mind you, she was batoning it through a stick of wood at the time...
Three knives I've lost:
The Barlow knife of my childhood. Don't remember how.
Cold Steel throwing knife, because I was trying to be cool, carrying it upside-down, shoulder-holster style, hiking in the woods with my bro's.
Cold Steel Large Voyager, that I left sitting on top of my ALICE pack, at Ft. Polk. I don't know if it was stolen, or just fell off when I picked up the pack.
If you lose your knife often enough for this to be an issue, then find a way to carry it that works. For my money, in the pocket, unclipped, is more secure than clipped on to the edge. YMMV