The flat winged FAI speed record model Dassel? If so that's a stretch and a half. And your mention of the all moving tail suggests that this IS the Dassel kit. I'm sorry but if this is the one that you're comparing the GL to then you should know that the Dassel came out years after the GL and the only similarity it shares with the GL is the fact that they both have wings.

In the original RCM article Carl Goldberg made a solid reference to wanting a glider that was intensely free flight oriented to let him learn to fly RC in a painless manner. It was his first ever attempt to fly RC according to the article. Or perhaps it was his first RC glider.... The airfoil he chose is one that he used on many of his then current FF power models. The Hi thrust Viking in particular used this same wing section and build method.