Change Text Notification Sound On Watch

I frequently have the sound on for my watch because it's useful when I'm at home. I generally will forget to turn the sound off at work, which isn't too much of a problem because things like phone calls and notifications for various things as a general rule come in with a more or less unobtrusive sound.

The text notifications though, that high pitched ding is just awful. If I could turn just that sound off or turn it to any other sound that is less annoying, that would be amazing. I've dug through the Watch App Settings and the option doesn't appear to be anywhere. I fear the option doesn't exist yet, but hopefully you guys can help me out.