Looking back, there were times when I wished my employer would have supplied my tools. Some of the cheesiest gut bucket outfits I worked for didn’t supply any tools at all, including basic things like a socket wrench set, sledge hammer or even a cheap piece of junk cordless drill for the truck.
I think this CAT-IV rating baloney for outside utility testing is getting a little out of hand, but I guess as long as the employer doesn’t expect you to share some bargain basement harbor freight multimeter with other workers, any decent brand of meter with the required CAT rating should be okay. Just wear your gloves and safety glasses and face shield in case the Chinese made meter innards let go on you at 480V.
As far as things like insulated hand tools, I think having them supply those would be a blessing as those things are not cheap at all.