Create and Update Your Notes Via Siri

"Apple's virtual personal assistant, Siri, can do all sorts of wonderful things, including creating and updating Notes right on your iPhone."

It's as simple as telling Siri to "create a new note" or "make a new note." If you add the name of the note at the end of the request, such as "create a new note grocery list" it will then title the note. I haven't tried this out, but supposedly updating the note isn't as easy as creating it. I'm guessing you just say "add grapes to grocery note" or something like that. What are your thoughts, ever tried creating notes or reminders via Siri? If so, any helpful hints?