Back in 1979 (I was stydying TKD in HS) I read an article in KF Illustrated or Karate Illus or one of those mags an article about the traditional martial art style that were considered street worthy.
They listed Greek Pankration, Kajukenbo, Escrima, Ninjutsu, and WIng Chun. And they had a panel interview with practitioners of each.
This was in NH and pre-internet, so it sat in the back of my mind for 20 years, during which I studied boxing, karate, and escrima.
Then I found a school in Boston on the internet in 1999. I drove an hour and a half each way to check it out. it was intriguing but I didn't understand.
Then I moved to the Bay Area and immediately started at another school. After a year and a half there, it wasn't working out, but I still was seeking. I tried another school and stuck around there for about 4 years, with a gap for grad school.
But I never felt confident with the skills I was learning. The principles made sense but I didn't feel dangerous.
Then I found my fourth (and last) school. And I've been there for six years and am nearly finished with the system and it works very well and now I do feel kinda dangerous!