As bholler said, if it is up to code it is technically allowed by code, but insurance companies can make their own rules. The International Building Code in your state would no longer allow a non -listed appliance to be installed in a new installation today since the International Mechanical Code requires all appliances to have a UL label attached. Some insurance companies take one step farther and require any appliance already installed to be Listed. That is their own rules and regulations they can add.
In Georgia, do you really need the output of a Grandpa Bear ??? If it drives you out, be aware the newer stoves turn down much farther and still burn clean extending your burn time with far less wood. 20 hour burn time is realistic with lower heat output, that may be more of what you actually need. This allows you to burn wood without using other heat sources when the Grandpa would drive you out.
If you want to stay with a Fisher, The newer Grandpa III with UL tag would suffice for their requirement. It still uses a 8 inch chimney and is much more inefficient as a newer EPA Certified stove. If your heating area will support a BK King model that also uses 8 inch, that would be a far better choice than the ridiculous prices being asked for a Fisher, (your area is extremely high) plus the 26% Government Rebate on a qualifying stove makes it a good time to upgrade, save tons of fuel and stay with your insurance co. if you're otherwise happy with them. Just be aware the rebate reduces your tax liability, it is not a payment. If your area is smaller and needs a newer stove that has a 6 inch outlet, the cost of a 6 inch insulated liner could become a factor. A newer 6 inch stove will not have the maximum output you are used to with the Grandpa, but the longer duration of burn and overall efficiency, plus chimney cleanliness is very much worth it.
(There, I said it. Now someone pick up bholler)