Help test Wysiwyg improvement?

Greetings!

Would you mind helping out with testing a new Wysiwyg module feature for better XHTML compliance?
There's a new feature branch for Wysiwyg called 'xhtml_callback' which provides a callback your plugin can use to avoid having to deal with XHTML validitiy issues caused by certain browsers.
It's an opt-in solution and Wysiwyg's Teaser Break plugin has been modified to take advantage of it as an example.
The needed modifications would be pretty trivial for a plugin like yours, but it comes with major benefits, which is why I'd like to have you in on this.

The feature branch is only available via git (and D7) for now and will not be merged into an official Wysiwyg release until plugin developers have had a chance to try it out and suggest improvements.

It would be awesome to have your input on this issue!