The gun room at the Beretta Gallery in NYC has always disappointed me. However, their clothing is very good and very reasonably priced. Nice European styles. Unfortunately their shirts and tweed jackets are too short for me sleevewise, but I have gotten a nice woolen greatcoat and some other stuff. Nice moleskin trousers, a good tweed vest.
I have a bad feeling that Beretta in NYC sell a lot of expensive, heavily decorated sideplated guns to people who don't know any better. Their London operation is a bit better. I think they get a more knowledgeable crowd there.
Good to know about the G&H public transport option- thank you. It would be Penn Station if it's Amtrak.