You Have To?

I’m giving your plugin a shot, and but for one thing it looks like it will work nicely. The one thing is; you have to use the text editor? You can’t add the buttons to the visual editor.

Other than that it looks rather simple to use, but I’m more comfortable with the visual editor and I’d rather not have to switch between the text and visual editors.

https://wordpress.org/plugins/magazine-columns/