My tools are about the only stuff worth nicking and ate kept in a large toolsafe in a rough lookin van.
Nobody expects such good tools in a beat up van.
I'm careful about who sees in the back and avoid working in dodgy places.
Although I have had shotgun years ago it was for pest control and I have never felt the need for a gun for protection.
I'm English and living in England if that helps people to work out why.
Oh and we have a four year old Bull Lurcher dog who is a reasonable size but the day I feel the need for protection from a four year old is the day I hand in my mancard.