Yes, the dictation feature in iOS6 and Mountain Lion is surprisingly good.
Over the years I bought a couple of dictation applications for the Mac and could never get practical use from them.
The current dictation feature in iOS 6 and Mountain Lion is faster and more accurate than previous dictation apps for Mac.
I was so impressed with Nuance’s Mac support that I ordered the rather expensive full Dragon Dictation for OS X with Bluetooth microphone and just received it a couple of days ago. I’ve only just begun to learn the system, but can already produce text with it faster than I can type.
However, korm is right. Check with Apple’s support forums on tricks of using Dragon in OS X or iOS6. (Obviously, the full app I bought is more fully featured.)
I’m still not grasping why this is a DEVONthink issue, but…
According to Apple (here), speaking “ellipsis” should result in Dictation outputting “…” Perhaps if that’s not happening, then there’s a need to train Dictation to recognize your speech patterns? (That’s not an insult … it’s merely how these things work. There a certain words that I just can’t make Dragon Dictate recognize.)
In any event, Dictation is producing text, which can be edited by any number of text editors (including DEVONthink) that have standard search & replace functions. It seems that writing a script to do that would be a lot of work.
Finally got around to testing “ellipsis” using Mountain Lion’s Dictation in DEVONthink. Dictation recognizes “ih-lip-sis” but not “ih-lip-seez” – in my standard American twang. So, I can see how it would fail in some cases.