Work tools sit under a business property cap
Equipment used to earn money is business property, limited to a small stated amount on most renters forms regardless of your contents limit. A tradesperson with a full set of tools is outside that cap without owning anything exceptional, and the cap applies whether the tools were at home or on a job.
Tools stolen from a vehicle are still contents
Theft from a truck is a property claim on your renters policy, not an auto claim, and it hits the same business property cap. It is also the single most common way a tradesperson loses tools.
A tools policy covers what the cap will not
Inland marine or a commercial tools policy covers equipment properly, usually anywhere it goes, frequently with a low deductible. For anyone whose income depends on their kit it is the correct answer rather than an upgrade.