In tactical situations, fixed blades can be incredibly reliable right off the bat, but folding knives are definitely easier to carry without being noticed. Which type do you find more trustworthy?
I've had experience with both types in different situations, but if we're talking about pure trust in a “no-nonsense, no-time-to-fiddle” moment, I always choose a fixed blade. There's something reassuring about a tool that has no moving parts, no locks that could fail, and no chance of dirt or lint slowing me down. Even a small fixed blade feels more reliable when things get messy.