My brother is an ISTP. The guy is basically an action hero. He's a firefighter, in the military, flies helicopters, is a very good surfer, rides motorcycles, etc. He has no interest in theory and strongly dislikes anything academic. He goes out, saves people's lives, and gets his adrenaline rush.
He builds things and he builds them well, but, due to a lack of design beforehand, they tend to not look as good as they could. Everything looks good on its own, but much of it seems a bit out of place when taken all together. What I mean is that he lacks a view of the bigger picture.