Prince nymph: horns or wings?

Am in the midst of tying & restocking those patterns I use most during
the spring/summer/fall.... and I notice--not for the first time--that I
seem to tie the Prince nymph both with wings tied curving downward,

http://tinyurl.com/g7o4l

and with wings curving upward,

http://tinyurl.com/k7y39

Over the years, I guess one way or the other has struck me as looking
"better" somehow, and then I tie it that way for a while, then I switch
back, more or less as the fancy strikes me.

I can't say I've ever noticed that either style is any easier to tie or
any more productive than the other......

(You see both in books and on tying sites. Sometimes you will even read
the wings referred to as "horns." Odd.)

So, just out of pure idle curiosity, for you tiers....

- Do you have any preference, one way or the other?

- Do you think it makes any difference?

- If so, what difference does it make?

- Bonus question: Which way was Doug Prince's original tied?

JR