I am. considering getting a helix piercing. There is a tattoo studio in my town with an amazing reputation for piercings (needle, not gun) and I spoke to the piercing professional there today.
She said
a) don't have it pierced on the side you sleep on (I do have a preferred side but turn a bit in the night)
b) it will be about 8 weeks before you can change the piercing (and it needs the usual cleaning)
c) it will be about six months before you can completely forget it is there.
I suspect I am a bit too much of a wimp and like my sleep too much to have it disturbed by a piercing, but I am interested in whether this chimes with your experience?