I point up nearly vertically when I have an erection, with a slight curve to the side. When I'm fully hard it stands up very rigidly. When I am fully hard you can barely push it outwards and it feels very uncomfortable to even try.
Peeing is impossible, and that's not only because of the angle, but because peeing is somehow blocked when I'm hard.
I can't do all positions because of its rigidness. For example, I'd have to do doggy style on all four myself.
Pointing down in undies and getting a boner is painful, and I point it up in my undies for as long as I can remember.
Despite the disadvantages I wouldn't want it differently. Im really happy with my vertical boner.