Thrive on throwing is more of an arm conditioning and mental approach type of thing. Is the combat pitching thing from Ron Wolforth? If so I believe it would be more specific and include more drills, etc. I believe, that Trevor Bauer, the kid who passed up his senior season in HS to be a top notch college pitcher at UCLA this season worked with Wolforth quite a deal. He also worked with Alan Jaeger who wrote Thrive on Throwing. I believe the two can be complimentary.
Why not just google combat pitcher and thrive on throwing and see what you get?