Yoooo! Awesome job on getting this made and up for the Jam!
3rd Person/Over The Shoulder is definitely a far different style of game to say, Rail Chase or Jungle Strike indeed :D.
It took my brain a little bit to properly adhere to the control switching on each paddle hit, but once I did I was trucking and scoring like mad :). Feels like the movement becomes harder the more hits (speed/etc) so the challenge was there too.
Only feedback I have would be to look into Physics Materials for the wall/ball colliders - setting friction to 0 and increase bounce - so you can't cease the ball's movement by "steering" hard into the walls :).