I've started using sie and hir in a short story I wrote for a supporting character. I use them when I refer to myself in the third person, at least sometimes. But I only use it while writing.
I don't do much
talking about the gender thing.
As for as pronunciation, I would go with "zee" and "here." Just my opinion, there's a few web sites if you Google "Gender Neutral Pronouns."
On the mighty Wikipedia, it's said that English had a gender neutral set, but that died out in approx the 14th century. "sie, hir, hirs, hirself" and "zie, zir, zirs, zirself" are used. Also, a there is a Spivak set, "e, em, eir, eirs, eirself."
But what one? I think that the sie/hir set rolls off a little easier and sounds less annoying to me.
http://www.aetherlumina.com/gnp/faq.html is a Gender Neutral Pronoun Pronoun FAQ
http://en.wikipedia.org/wiki/Gender-neutral_pronoun is the afore mentioned Wikipedia entry
That is all I got for now.
I do particularly hate choosing a "Salutation," though. Mr. Miss, Ms., Mrs., Dr. I choose Rev. if I can find it, mostly because I think it's funny. At least until the PhD is done.
b/d