Think about this for a second. If your dick is upward with a full HARD erection, its damn near impossible to push it downward because its anchored to your body. If you have a downward erection that would be like a semi erection. You can still push your penis upward and that will happen during sex. But the main factor would be how hard is your erections. I personally have never in my life heard a woman liking downward erections especially like “Wow its pointing down!”. If it is pointing down, then it probably wouldn’t turn her off but not exactly a turn on. But have heard a lot about when the penis points up.