Hi Jeff
"Can you see yourself using it as the primary method of creating content?"

Not at the moment for the same reason you mentioned earlier...

"I’m so used to creating content from the backend, it’s tough to imagine doing it any other way."

Plus working in the backend is no great hardship.

I write all my posts on a local copy of my site and then cut and paste into the live site when everything is finished - change the image URLs and I'm done.