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)
"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."