I used to keep a big bottle of vodka, and some other paraphenilia in my tool box.
Tools are just tools.
If you use them properly, and put them back away in their respective places when finished, I don't see the problem
I don't generally loan or let people use my tools, but it's because of loss, abuse and not being able to find them again when I need them.
His anger, well, that's just being a drunk.