Would Tyson's style work well at welterweight?

It works at any weight. There are very few active trainers who know all the nuances, though. And you have to be in exceptional shape to use it because it's a demanding, energy-intensive style.

Would probably look something like Porter, but not as sloppy.

Juan Diaz is the closest thing to peek a boo since Tyson, at the light weights. He was extremely effective. Conditioning, one of the most well condition Ed athletes in the world. He was fun to watch aka buzzsaw