You can test things to the extreme and you can test to realistic scenario's. Dropping a signal mirror happens all the time, but putting a knife in a vice and hit it, well i haven't seen that happening anytime soon.

Designs and materials used for a tool are made to do a specific task. Thats why a prybar is better at prying, a shovel better at digging, etc. Expecting a tool can do everything well, even though it's not designed to do so, is not really realistic.

All you have to know, is what the limits are of the tools you are carring with you at the time you really need them. It doesn't have to be able to pry or dig. Thats why you are carring a tool, so you can make something to do that