I got to try a small sample of this today at a local tasting. The distributor was unusually helpful. He said it is Heaven Hill bourbon, aged 2 years in KY and then 2 years on Nantucket.
It was not bad, but I didn't get to properly evaluate it. It might be my imagination, but the ocean air aging did seem to give it a Scotch-like nuance.
If I make it down for the Sept. Festival, we'll bring a bottle along.