With what is available today, it's more of a novelty than anything else. If you look at what was happening to American beer though, 30 years ago, it was a huge leap. I listened to the Basic Brewing Radio podcast where they had Jack on and talking about it. Basically, it's a two row SMASH with Cascade hops. Because cascade was the only hop he could get at the time. My guess is that it's probably pretty close to what was brewed 30 years ago, if nothing else, for the simplicity of the recipe. The yeast would probably be the biggest factor.