Yes Bb I've found them also good for handheld electrical devices like handheld vhf and gps and spare fuses.
i have found the soft tool bags no good to keep tools in, they must attract the moisture and hold it in, I just keep them in a hard, secure lid tool box, but yeah a large airtight container like sistema would be good I reckon with the occasional spray over once a year with inox or similar.

Keep an eye out for Tupperware at op shops they're good, lanox is good on tools and your hands too

I find tools wrapped in a heavily 'Lanoxed' towelling rag and kept in an plastic food storer box works pretty well.

Boiled sheep is your friend