In my quest to find some well known delta-quadra scientists, I think I might have found one that possibly fits something of the role. Although maybe not a scientist in the very technical sense of the word, he did a lot of designing and experimenting with new aircraft. He also won a number of competitions involving model aircraft in his youth. I suspect he might be an ISTp/ESTj. Here are some quotes of his:

“if someone is aggressively selling a technical product whose merits are dependent on complex experimental data, he is likely lying”. That is true whether the product is an airplane or a Carbon Credit."" (He feared global warming was a ploy by the government to grab more power for itself)

Other quotes:

"Testing leads to failure, and failure leads to understanding."

"We'll go back to the moon by not learning anything new."

"The criticism is, once I get something flying, I lose interest in it."

"The most impressive airplane ever, I believe, was designed only a dozen years after the first operational jet. Stayed in service till it was too rusty to fly, taken out of service. The most impressive spaceship ever, I believe, was a Grumman Lunar Lander."