My carpenter friends and I have all agreed for some time that the weak link on a tool belt is the clasp. Some twist-grip buckles are flimsy, and they can all be clumsy to disengage, especially if you have to remove your belt in a precarious spot.
As a remedy, I removed my old clasp and replaced it with a seat-belt buckle. I tried both the push-button type and the spring type, and decided I like the spring type better. Now I can easily remove the belt when I want to, and with one hand at that.
Evan Disinger, Lemon Grove, CA