Actually Nationwide told me they don't do commercial liablity in Florida. At least not here. And they originally told me they would do it since I was an existing customer, but then they didn't reply to my request through my auto agent. So I am ditching them. Took 3 weeks just to get my homeowners and auto policy for my wife's car set up properly and I wasn't impressed. They even tried to tell me my drivers license wasn't valid, because THEIR computer didn't find it in the system.
Florida insurance is screwy, perhaps because of the no-fault laws here. But I can't recommend Nationwide anymore. They seem very disorganized at both the agent and corporate level. I'm still getting statements every month or so with little changes to the premium that they don't bother to explain.
I will be getting my commercial insurance with someone else, and as soon as I get time I'm switching it all.