Hey Rob,
All the 'package policies' that I've seen have covereage for personal property "at another location", typically 10% of your personal property limit. A situation I've seen is: you've got 75,000 for your personal property and 7500 of that will cover the piano that you want to leave at your mother's. Another was the claim for cameras and jewelry stolen from their car, parked at a restaurant 75 miles from home. All the policies I'm familiar with "include" 10% for that, but pretty much any time there's the word "include" it means that you can get a higher limit for an increase in premium.
By 'package policy' I refer to most homeowner's policies that include coverage for the dwelling, personal property, liability, guest medical, etc. all under one policy. Also available are individual policies, i.e. coverage for the dwelling. Or liability coverage. I refer to them as 'ala carte' policies and they still have their place. If there's a home that I won't insure (because of condition) I can usually still provide a liability policy if that's what they need. I can't think of a situation where I'd provide coverage for a dwelling and not recommend liability, but it would be possible for someone to buy it that way if they wanted.
Many years ago (30's & 40's & early 50's) you bought fire insurance from one company, liability from another, theft from another, auto from yet another, etc. This was due to states' regulations. To get around that insurance companies formed "groups" so that you could get fire, theft and liability at the same place. To this day, you might notice that the older companies are many times "group" companies. The biggest one I represent was 58 different companies the last time I counted.
The tractor situation I know well because someone came to us with a complaint: he'd bought a Kubota and called his agent to make sure it was covered, and was told that "it is". At some later time it rolled down a hill and crashed. He found out it "wasn't covered". He got mad and came to us. We explained what I said in the ealier post in this thread. He then wished that it had been explained like that to him because he'd have purchased the policy from Kubota which would have covered "crash" (collision).
You didn't ask, but I'll add that most companies I see will extend liability to vacant land that you own at little or no charge. And liability insurance's main benefit isn't "... paying for someone hurt on my property...". The main benefit is providing the lawyers to defend you against someone sueing you because they claim that it's your fault that they have suffered a loss, whether it's injury or monetary or even that they are sueing you because you refuse to allow Polish people to mow your lawn (discrimination). It was liability coverage that paid $500,000 to a woman whose eye was poked out in a Kmart by a guy coming around the corner with a mop he was buying. I'm only guessing that the $500,000 award coincided with the liability limit on his homeowners policy. The point: liability covers more than just things that happen on your property. The bigger point: liability provides the lawyers (I'm repeating to emphasize the point).
And I've gotta add that I've not yet been in the position of needing to refuse doing work/favors for someone, but it sure could happen and I've been following this thread from the start so I'll have an idea of how to address the situation.
Phil