The problem, as any PC Feminazi can tell you, is that H/She connotes a binary choice and we have all learned that that is exclusionary.
We really simply need to promote getting back to "one" as a gender-neutral personal pronoun. I'm a bit of an old fart, and if I'm writing about my son, I'm not going to avoid using "he/him" in the next clause. I'm not staking out territory for universal political correctness. But there are a zillion needs for a pronoun to replace a noun,.... like "user", like "citizen", like "customer", etc... within the same sentence, paragraph or article. "One" fits perfectly. "Oneself" would therefore become the reflexive personal pronoun.
The problem, I feel, is in the usage in that it just seems hoity-toity. We simply have to wean ourselves of that perception. One can express oneself without having to imagine having an attack of the vapours under the grape arbor awaiting Mr. Darcy's arrival. Try saying "one" or "one's" or "oneself" without a bad Hollywood-British upper crust accent. It's not so bad, really. And your speech and/or writing is that much clearer and cleaner.
Lookit. We taught Robert Byrd, in a single generation, to get from ****** to niggra to neeee-gra-ow to negro to black to African American. We can certainly teach ourselves to recognize that unlike the speakers of Romance languages, we do not always have to attach a gender to everything. There is a tremendous need for a gender neutral PERSONAL pronoun; and I emphasize "personal" because of the ludicrous proposition I once read that we just neutralize everything and use "it" uniformly. Male/Female/Other... no person is an it.
I vote for One.