Would you ever advise hitting up? Isn't the opposite of up always down?
I dont have my book with me but I believe Homer said to always hit down "except under special circumstances". I may have the wordage wrong but something to that effect. Driving the ball hard or changing your impact dynamics for added distance qualifies as a specialty shot to my mind. With the ball teed up in front of low point, you'd need to adjust for the fade tendency given a Rotated Grip etc etc. But there is distance to be had flighting the ball in that manner , high but with less spin.