Hi Chuck,
Several people on this board will chime in I'm sure, as they are the largest specialty gun insurer out there.
I didn't follow through with a claim but I called to get one in process awhile back. I had a damascus Mortimer get damaged in shipping and I called and told them what had happened and the cost to cure. They said "okay, we'll process right away" to which I responded "give me 30 days because I want to see if the shipper will take on the liability so as to not require me to follow a claim".
In the end, I didn't complete the claim with Eastern but the experience was positive and my agent responded immediately. (A guy named Jack that runs the overall program for Eastern)