Yes, I have actually. There used to be fights between Habu and Mongoose.
I spent 3 years on the island in the mid-60’s and I also saw the Habu vs. Mongoose battle it out. Poor Habu always lost.
One year at the Kadena Carnival the old Okinawan guy that was running the match got bitten and died right before our very eyes. Needless to say, my days of exploring the local caves came to an abrupt halt.
Thanks for the memories.